32 is the natural number following 31 and preceding 33.

Cardinal	thirty-two
Ordinal	32nd (thirty-second)
Factorization
Roman numeral	XXXII
Binary	100000
Hexadecimal	20

32 is the smallest number n with exactly 7 solutions to the equation φ(x) = n.

In science

• The atomic number of germanium
• The freezing point of water at sea level in degrees Fahrenheit

In astronomy,

Messier object M32, a magnitude 10.0 galaxy in the constellation Andromeda which is a companion to M31.

The New General Catalogue object NGC 32 , a star in the constellation Pegasus

The Saros number of the solar eclipse series which began on -1957 September 24 and ended on -460 March 10. The duration of Saros series 32 was 1496.5 years, and it contained 84 solar eclipses.

The Saros number of the lunar eclipse series which began on -1691 June 11 and ended on -375 August 9. The duration of Saros series 32 was 1316.2 years, and it contained 74 lunar eclipses.

Thirty-two is also:

• The size of a full set of adult teeth in humans, including wisdom teeth.
• The size of a databus in bits: 32-bit.
• ASCII and Unicode code point for space.
• The size, in bits, of certain integer data types, used in computer representations of numbers.
• In chess, the total amount of black squares on the board, the total amount of white squares, and the total amount of pieces (black and white) at the beginning of the game.
• The code for international direct dial phone calls to Belgium.
• In the title Thirty Two Short Films About Glenn Gould, starring Colm Feore.
• In the title and lyrics of the song 32 Footsteps by They Might Be Giants.
• Article 32 of the UCMJ concerns pre-trial investigations. Such a hearing is often called an "article 32 hearing."
• The year 32 A.D., 32 B.C., or 1932