72511536 has 40 divisors (see below), whose sum is σ = 189188784. Its totient is φ = 23929600.

The previous prime is 72511529. The next prime is 72511547. The reversal of 72511536 is 63511527.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2631 + ... + 12326.

Almost surely, 2^72511536 is an apocalyptic number.

It is an amenable number.

72511536 is an abundant number, since it is smaller than the sum of its proper divisors (116677248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72511536 is a wasteful number, since it uses less digits than its factorization.

72511536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15069 (or 15063 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 72511536 is about 8515.3705732634. The cubic root of 72511536 is about 416.9996607028. Note that the first 3 decimals are identical.

Subtracting from 72511536 its reverse (63511527), we obtain a palindrome (9000009).

The spelling of 72511536 in words is "seventy-two million, five hundred eleven thousand, five hundred thirty-six".