72718656 has 56 divisors (see below), whose sum is σ = 203728320. Its totient is φ = 22812672.

The previous prime is 72718637. The next prime is 72718691. The reversal of 72718656 is 65681727.

It is a congruent number.

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, 7876 + ... + 14403.

Almost surely, 2^72718656 is an apocalyptic number.

It is an amenable number.

72718656 is an abundant number, since it is smaller than the sum of its proper divisors (131009664).

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

72718656 is a wasteful number, since it uses less digits than its factorization.

72718656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22311 (or 22301 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 72718656 is about 8527.5234388420. The cubic root of 72718656 is about 417.3963188105.

The spelling of 72718656 in words is "seventy-two million, seven hundred eighteen thousand, six hundred fifty-six".