72687256 has 16 divisors (see below), whose sum is σ = 136659600. Its totient is φ = 36244704.

The previous prime is 72687227. The next prime is 72687271. The reversal of 72687256 is 65278627.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9196 + ... + 15163.

It is an arithmetic number, because the mean of its divisors is an integer number (8541225).

Almost surely, 2^72687256 is an apocalyptic number.

It is an amenable number.

72687256 is a deficient number, since it is larger than the sum of its proper divisors (63972344).

72687256 is a wasteful number, since it uses less digits than its factorization.

72687256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24738 (or 24734 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 72687256 is about 8525.6821427966. The cubic root of 72687256 is about 417.3362327564.

The spelling of 72687256 in words is "seventy-two million, six hundred eighty-seven thousand, two hundred fifty-six".