72728364 has 24 divisors (see below), whose sum is σ = 173311488. Its totient is φ = 23726800.

The previous prime is 72728321. The next prime is 72728377. The reversal of 72728364 is 46382727.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63912 + ... + 65039.

It is an arithmetic number, because the mean of its divisors is an integer number (7221312).

Almost surely, 2^72728364 is an apocalyptic number.

It is an amenable number.

72728364 is an abundant number, since it is smaller than the sum of its proper divisors (100583124).

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

72728364 is a wasteful number, since it uses less digits than its factorization.

72728364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129005 (or 129003 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 72728364 is about 8528.0926355194. The cubic root of 72728364 is about 417.4148922339.

The spelling of 72728364 in words is "seventy-two million, seven hundred twenty-eight thousand, three hundred sixty-four".