72865524 has 24 divisors (see below), whose sum is σ = 171007200. Its totient is φ = 24147424.

The previous prime is 72865523. The next prime is 72865547. The reversal of 72865524 is 42556827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72865523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15474 + ... + 19625.

It is an arithmetic number, because the mean of its divisors is an integer number (7125300).

Almost surely, 2^72865524 is an apocalyptic number.

It is an amenable number.

72865524 is an abundant number, since it is smaller than the sum of its proper divisors (98141676).

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

72865524 is a wasteful number, since it uses less digits than its factorization.

72865524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35279 (or 35277 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 72865524 is about 8536.1305050942. The cubic root of 72865524 is about 417.6771313834.

The spelling of 72865524 in words is "seventy-two million, eight hundred sixty-five thousand, five hundred twenty-four".