72656922 has 16 divisors (see below), whose sum is σ = 156492000. Its totient is φ = 22355952.

The previous prime is 72656869. The next prime is 72656989. The reversal of 72656922 is 22965627.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 465672 + ... + 465827.

It is an arithmetic number, because the mean of its divisors is an integer number (9780750).

Almost surely, 2^72656922 is an apocalyptic number.

72656922 is an abundant number, since it is smaller than the sum of its proper divisors (83835078).

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

72656922 is a wasteful number, since it uses less digits than its factorization.

72656922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931517.

The product of its digits is 90720, while the sum is 39.

The square root of 72656922 is about 8523.9029792695. The cubic root of 72656922 is about 417.2781701312.

The spelling of 72656922 in words is "seventy-two million, six hundred fifty-six thousand, nine hundred twenty-two".