172988904 has 32 divisors (see below), whose sum is σ = 471788640. Its totient is φ = 52420800.

The previous prime is 172988899. The next prime is 172988929. The reversal of 172988904 is 409889271.

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, 327367 + ... + 327894.

It is an arithmetic number, because the mean of its divisors is an integer number (14743395).

Almost surely, 2^172988904 is an apocalyptic number.

It is an amenable number.

172988904 is an abundant number, since it is smaller than the sum of its proper divisors (298799736).

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

172988904 is a wasteful number, since it uses less digits than its factorization.

172988904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655281 (or 655277 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 172988904 is about 13152.5246245730. The cubic root of 172988904 is about 557.1935524829.

The spelling of 172988904 in words is "one hundred seventy-two million, nine hundred eighty-eight thousand, nine hundred four".