72811792 has 10 divisors (see below), whose sum is σ = 141072878. Its totient is φ = 36405888.

The previous prime is 72811763. The next prime is 72811807. The reversal of 72811792 is 29711827.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 23193856 = 7044^2 + 4816^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2275353 + ... + 2275384.

Almost surely, 2^72811792 is an apocalyptic number.

It is an amenable number.

72811792 is a deficient number, since it is larger than the sum of its proper divisors (68261086).

72811792 is a wasteful number, since it uses less digits than its factorization.

72811792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550745 (or 4550739 counting only the distinct ones).

The product of its digits is 14112, while the sum is 37.

The square root of 72811792 is about 8532.9825969587. The cubic root of 72811792 is about 417.5744392589.

The spelling of 72811792 in words is "seventy-two million, eight hundred eleven thousand, seven hundred ninety-two".