Seventy two

72 is an even number.

72 is a Harshad number, which means it is divisible by the sum of its digits (7 + 2 = 9, and 72 is divisible by 9).

In binary, 72 is represented as 1001000.

In hex, 72 is represented as 48.

Prime factorization of 72: 2^{3} * 3^{2}.

Factors of 72 are: 1, 2, 3, 4, 6, 8, 8, 9, 12, 18, 24, 36, 72.