72504736 has 24 divisors (see below), whose sum is σ = 142974720. Its totient is φ = 36193728.

The previous prime is 72504721. The next prime is 72504737. The reversal of 72504736 is 63740527.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72504737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23745 + ... + 26623.

It is an arithmetic number, because the mean of its divisors is an integer number (5957280).

Almost surely, 2^72504736 is an apocalyptic number.

It is an amenable number.

72504736 is a deficient number, since it is larger than the sum of its proper divisors (70469984).

72504736 is a wasteful number, since it uses less digits than its factorization.

72504736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 72504736 is about 8514.9712859175. The cubic root of 72504736 is about 416.9866251387.

The spelling of 72504736 in words is "seventy-two million, five hundred four thousand, seven hundred thirty-six".