72356656 has 20 divisors (see below), whose sum is σ = 142569000. Its totient is φ = 35564672.

The previous prime is 72356639. The next prime is 72356701. The reversal of 72356656 is 65665327.

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, 37381 + ... + 39268.

It is an arithmetic number, because the mean of its divisors is an integer number (7128450).

Almost surely, 2^72356656 is an apocalyptic number.

It is an amenable number.

72356656 is a deficient number, since it is larger than the sum of its proper divisors (70212344).

72356656 is a wasteful number, since it uses less digits than its factorization.

72356656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76716 (or 76710 counting only the distinct ones).

The product of its digits is 226800, while the sum is 40.

The square root of 72356656 is about 8506.2715686721. The cubic root of 72356656 is about 416.7025542067.

The spelling of 72356656 in words is "seventy-two million, three hundred fifty-six thousand, six hundred fifty-six".