172876920 has 32 divisors (see below), whose sum is σ = 518631120. Its totient is φ = 46100480.

The previous prime is 172876861. The next prime is 172876969. The reversal of 172876920 is 29678271.

172876920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 720201 + ... + 720440.

Almost surely, 2^172876920 is an apocalyptic number.

172876920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172876920 is an abundant number, since it is smaller than the sum of its proper divisors (345754200).

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

172876920 is a wasteful number, since it uses less digits than its factorization.

172876920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440655 (or 1440651 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 172876920 is about 13148.2668059330. The cubic root of 172876920 is about 557.0732938414.

The spelling of 172876920 in words is "one hundred seventy-two million, eight hundred seventy-six thousand, nine hundred twenty".