72631922 has 16 divisors (see below), whose sum is σ = 125844192. Its totient is φ = 31072320.

The previous prime is 72631877. The next prime is 72631943. The reversal of 72631922 is 22913627.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96728 + ... + 97475.

It is an arithmetic number, because the mean of its divisors is an integer number (7865262).

Almost surely, 2^72631922 is an apocalyptic number.

72631922 is a deficient number, since it is larger than the sum of its proper divisors (53212270).

72631922 is a wasteful number, since it uses less digits than its factorization.

72631922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194233.

The product of its digits is 9072, while the sum is 32.

The square root of 72631922 is about 8522.4363887330. The cubic root of 72631922 is about 417.2303052218.

The spelling of 72631922 in words is "seventy-two million, six hundred thirty-one thousand, nine hundred twenty-two".