172432272 has 40 divisors (see below), whose sum is σ = 452106976. Its totient is φ = 56618496.

The previous prime is 172432243. The next prime is 172432283. The reversal of 172432272 is 272234271.

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, 23593 + ... + 30024.

Almost surely, 2^172432272 is an apocalyptic number.

172432272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172432272 is an abundant number, since it is smaller than the sum of its proper divisors (279674704).

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

172432272 is a wasteful number, since it uses less digits than its factorization.

172432272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53695 (or 53689 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 172432272 is about 13131.3469225362. The cubic root of 172432272 is about 556.5952770790.

The spelling of 172432272 in words is "one hundred seventy-two million, four hundred thirty-two thousand, two hundred seventy-two".