172407172 has 24 divisors (see below), whose sum is σ = 359807616. Its totient is φ = 70675968.

The previous prime is 172407163. The next prime is 172407223. The reversal of 172407172 is 271704271.

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, 133213 + ... + 134500.

It is an arithmetic number, because the mean of its divisors is an integer number (14991984).

Almost surely, 2^172407172 is an apocalyptic number.

It is an amenable number.

172407172 is an abundant number, since it is smaller than the sum of its proper divisors (187400444).

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

172407172 is a wasteful number, since it uses less digits than its factorization.

172407172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267747 (or 267745 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 172407172 is about 13130.3911594438. The cubic root of 172407172 is about 556.5682689495.

The spelling of 172407172 in words is "one hundred seventy-two million, four hundred seven thousand, one hundred seventy-two".