172880456 has 32 divisors (see below), whose sum is σ = 375684480. Its totient is φ = 73046400.

The previous prime is 172880447. The next prime is 172880479. The reversal of 172880456 is 654088271.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17765 + ... + 25716.

It is an arithmetic number, because the mean of its divisors is an integer number (11740140).

Almost surely, 2^172880456 is an apocalyptic number.

It is an amenable number.

172880456 is an abundant number, since it is smaller than the sum of its proper divisors (202804024).

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

172880456 is a wasteful number, since it uses less digits than its factorization.

172880456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43565 (or 43561 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 172880456 is about 13148.4012716376. The cubic root of 172880456 is about 557.0770919149.

The spelling of 172880456 in words is "one hundred seventy-two million, eight hundred eighty thousand, four hundred fifty-six".