72899836 has 6 divisors (see below), whose sum is σ = 127574720. Its totient is φ = 36449916.

The previous prime is 72899759. The next prime is 72899851. The reversal of 72899836 is 63899827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9112476 + ... + 9112483.

Almost surely, 2^72899836 is an apocalyptic number.

It is an amenable number.

72899836 is a deficient number, since it is larger than the sum of its proper divisors (54674884).

72899836 is a wasteful number, since it uses less digits than its factorization.

72899836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18224963 (or 18224961 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 72899836 is about 8538.1400784948. The cubic root of 72899836 is about 417.7426817654.

Subtracting from 72899836 its reverse (63899827), we obtain a palindrome (9000009).

The spelling of 72899836 in words is "seventy-two million, eight hundred ninety-nine thousand, eight hundred thirty-six".