32 (number)
| ||||
---|---|---|---|---|
→ | ||||
Cardinal | thirty-two | |||
Ordinal | 32nd (thirty-second) | |||
Factorization | 25 | |||
Divisors | 1, 2, 4, 8, 16, 32 | |||
Greek numeral | ΛΒ´ | |||
Roman numeral | XXXII | |||
Binary | 1000002 | |||
Ternary | 10123 | |||
Senary | 526 | |||
Octal | 408 | |||
Duodecimal | 2812 | |||
Hexadecimal | 2016 |
32 (thirty-two) is the natural number following 31 and preceding 33.
Mathematics
32 is the fifth power of two (), making it the first non-unitary fifth-power of the form where is prime. 32 is the totient summatory function over the first 10 integers,[1] and the smallest number with exactly 7 solutions for .
The aliquot sum of a power of two is always one less than the number itself, therefore the aliquot sum of 32 is 31.[2]
The product between neighbor numbers of
32 is also a Leyland number expressible in the form , where:[5][b]
The eleventh Mersenne number is the first to have a prime
The product of the five known
The first 32 rows of Pascal's triangle read as single binary numbers represent the 32 divisors that belong to this number, which is also the number of sides of all odd-sided constructible polygons with simple tools alone (if the monogon is also included).[10]
There are also a total of 32 uniform colorings to the 11 regular and semiregular tilings.[11]
There are 32 three-dimensional crystallographic point groups[12] and 32 five-dimensional crystal families,[13] and the maximum determinant in a 7 by 7 matrix of only zeroes and ones is 32.[14] In sixteen dimensions, the sedenions generate a non-commutative loop of
32 is the furthest point in the set of natural numbers where the ratio of primes (2, 3, 5, ..., 31) to non-primes (0, 1, 4, ..., 32) is [d]
In science
- The atomic number of germanium
- The degrees Fahrenheit
- In the Standard Model of particle physics, there are 32 degrees of freedom among the leptons and all bosons that interact with them (including the graviton, which is generally expected to exist, and assuming there are no right-handed neutrinos)[citation needed]
Astronomy
- .
- The NGC 32, a star in the constellation Pegasus
In music
- A thirty-second note or demisemiquaver is a note played for 1/32 of the duration of a whole note
- The number of completed, numbered piano sonatas by Ludwig van Beethoven
- "32 Footsteps", a song by They Might Be Giants
- "The Chamber of 32 Doors", a song by Genesis, from their 1974 concept album The Lamb Lies Down on Broadway
- "32", a song on Mr. Mister's debut album I Wear the Face
- "32", a song by electro-rock group Carpark North
- "Thirty Two", a song by Van Morrison on the album New York Sessions '67
- ThirtyTwo is the fourth album by English band Reverend and the Makers
- "32 Pennies", a song on Warrant's 1989 debut album Dirty Rotten Filthy Stinking Rich
- The number of rays in the Japanese Rising Sun on the cover of Incubus' 2006 album Light Grenades
- "32 Ways To Die", a song on Sum41's album Half Hour of Power
- The shortened pseudonym of UK rapper Wretch 32
In religion
In the Kabbalah, there are 32 Kabbalistic Paths of Wisdom. This is, in turn, derived from the 32 times of the Hebrew names for God, Elohim appears in the first chapter of Genesis.
One of the central texts of the
The Hindu scripture Mudgala Purana also describes Ganesha as taking 32 forms.
In sports
- In chess, the total number of black squares on the board, the total number of white squares, and the total number of pieces (black and white) at the beginning of the game.
- The number of teams in the National Football League.
- The number of teams in the National Hockey League.
- In association football:
- The FIFA World Cup final tournament has featured 32 men's national teams from 1998 through 2022, after which the field will expand to 48.
- The FIFA Women's World Cup final tournament will feature 32 national teams starting with the next edition in 2023.
- The ball used in association football is most often made with 32 panels of leather or synthetic material.
In other fields
Thirty-two could also refer to:
- The number of teeth of a full set of teeth in an adult human, including wisdom teeth
- The size of a 32-bit
- The size, in bits, of certain representations of numbers
- ) addresses
- ASCII and Unicode code point for space
- The code for international direct dialphone calls to Belgium
- In the title Thirty-Two Short Films About Glenn Gould, starring Colm Feore
- The Article 32 of the UCMJconcerns pre-trial investigations. Such a hearing is often called an "Article 32 hearing"
- The caliber .32 ACP
- The number of the French department Gers
- The traditional 32 counties of Ireland
Notes
- ^ 32 is the ninth 10-happy number, while 23 is the sixth.[4] Their sum is 55, which is the tenth triangular number,[3] while their difference is
- icosidodecagoncontains distinct symmetries.[6]
For comparison, a 16-sided hexadecagon contains 14 symmetries, an 8-sided octagon contains 11 symmetries, and a square contains 8 symmetries. - factor of 11, that is the composite index of 20; the aliquot part of 32 is 31 as well).[2] This is due to the fact that the ratio of composites to primes increases very rapidly, by the prime number theorem.
- ^ 29 is the only earlier point, where there are twenty non primes, and ten primes. 40 — twice the composite index of 32 — lies between the 8th pair of sexy primes (37, 43),[18] which represent the only two points in the set of natural numbers where the ratio of prime numbers to composite numbers (up to) is 1/2. Where 68 is the forty-eighth composite, 48 is the thirty second, with the difference 68 – 48 = 20, the composite index of 32.[8] Otherwise, thirty-two lies midway between primes (23, 41), (17, 47) and (3, 61).
At 33, there are 11 numbers that are prime and 22 that are not, when considering instead the set of natural numbers that does not include 0. The product 11 × 33 = 363 represents the thirty-second number to return 0 for the Mertens function M(n).[19]
References
- ^ Sloane, N. J. A. (ed.). "Sequence A002088 (Sum of totient function)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-05-04.
- ^ a b Sloane, N. J. A. (ed.). "Sequence A001065 (Sum of proper divisors (or aliquot parts) of n: sum of divisors of n that are less than n.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-01-10.
- ^ a b Sloane, N. J. A. (ed.). "Sequence A000217 (Triangular numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-05-04.
- ^ "Sloane's A007770 : Happy numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
- ^ "Sloane's A076980 : Leyland numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
- Zbl 1173.00001.
- ^ Sloane, N. J. A. (ed.). "Sequence A000225 (a(n) equal to 2^n - 1. (Sometimes called Mersenne numbers, although that name is usually reserved for A001348.))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-01-08.
- ^ a b Sloane, N. J. A. (ed.). "Sequence A002808 (The composite numbers: numbers n of the form x*y for x > 1 and y > 1.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-01-08.
- ^ Sloane, N. J. A. (ed.). "Sequence A00040 (The prime numbers.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-01-08.
- S2CID 115239655.
- S2CID 119730123.
- ^ Sloane, N. J. A. (ed.). "Sequence A004028 (Number of geometric n-dimensional crystal classes.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-11-08.
- ^ Sloane, N. J. A. (ed.). "Sequence A004032 (Number of n-dimensional crystal families.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-11-08.
- ^ Sloane, N. J. A. (ed.). "Sequence A003432 (Hadamard maximal determinant problem: largest determinant of a (real) {0,1}-matrix of order n.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-04-04.
- Zbl 1155.20315.
- ^ Baez, John C. (November 15, 2014). "Integral Octonions (Part 8)". John Baez's Stuff. U.C. Riverside, Department of Mathematics. Retrieved 2023-05-04.
- Zbl 1159.11020.
- ^ Sloane, N. J. A. (ed.). "Sequence A156274 (List of prime pairs of the form (p, p+6).)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-01-11.
- ^ Sloane, N. J. A. (ed.). "Sequence A028442 (Numbers k such that Mertens's function M(k) (A002321) is zero.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-01-11.
External links
- Prime Curios! 32 from the Prime Pages