172472120 has 32 divisors (see below), whose sum is σ = 408488400. Its totient is φ = 65357568.

The previous prime is 172472099. The next prime is 172472129. The reversal of 172472120 is 21274271.

It is a self number, because there is not a number n which added to its sum of digits gives 172472120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172472129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112709 + ... + 114228.

Almost surely, 2^172472120 is an apocalyptic number.

172472120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172472120 is an abundant number, since it is smaller than the sum of its proper divisors (236016280).

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

172472120 is a wasteful number, since it uses less digits than its factorization.

172472120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226967 (or 226963 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 172472120 is about 13132.8641202138. The cubic root of 172472120 is about 556.6381489847.

The spelling of 172472120 in words is "one hundred seventy-two million, four hundred seventy-two thousand, one hundred twenty".