72979562 has 12 divisors (see below), whose sum is σ = 110319846. Its totient is φ = 36207360.

The previous prime is 72979547. The next prime is 72979591. The reversal of 72979562 is 26597927.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 48288601 + 24690961 = 6949^2 + 4969^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162314 + ... + 162762.

Almost surely, 2^72979562 is an apocalyptic number.

72979562 is a deficient number, since it is larger than the sum of its proper divisors (37340284).

72979562 is an equidigital number, since it uses as much as digits as its factorization.

72979562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 632 counting only the distinct ones).

The product of its digits is 476280, while the sum is 47.

The square root of 72979562 is about 8542.8076181078. The cubic root of 72979562 is about 417.8949126485.

The spelling of 72979562 in words is "seventy-two million, nine hundred seventy-nine thousand, five hundred sixty-two".