72231056 has 20 divisors (see below), whose sum is σ = 143203632. Its totient is φ = 35275296.

The previous prime is 72231041. The next prime is 72231097. The reversal of 72231056 is 65013227.

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, 51806 + ... + 53181.

Almost surely, 2^72231056 is an apocalyptic number.

It is an amenable number.

72231056 is a deficient number, since it is larger than the sum of its proper divisors (70972576).

72231056 is a wasteful number, since it uses less digits than its factorization.

72231056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105038 (or 105032 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 72231056 is about 8498.8855740032. The cubic root of 72231056 is about 416.4613040973.

The spelling of 72231056 in words is "seventy-two million, two hundred thirty-one thousand, fifty-six".