72910838 has 64 divisors (see below), whose sum is σ = 149022720. Its totient is φ = 25833600.

The previous prime is 72910829. The next prime is 72910861. The reversal of 72910838 is 83801927.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157928 + ... + 158388.

It is an arithmetic number, because the mean of its divisors is an integer number (2328480).

Almost surely, 2^72910838 is an apocalyptic number.

72910838 is an abundant number, since it is smaller than the sum of its proper divisors (76111882).

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

72910838 is a wasteful number, since it uses less digits than its factorization.

72910838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 72910838 is about 8538.7843397055. The cubic root of 72910838 is about 417.7636958675.

The spelling of 72910838 in words is "seventy-two million, nine hundred ten thousand, eight hundred thirty-eight".