172740460 has 24 divisors (see below), whose sum is σ = 371192976. Its totient is φ = 67488960.

The previous prime is 172740437. The next prime is 172740487. The reversal of 172740460 is 64047271.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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, 99571 + ... + 101290.

It is an arithmetic number, because the mean of its divisors is an integer number (15466374).

Almost surely, 2^172740460 is an apocalyptic number.

172740460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172740460 is an abundant number, since it is smaller than the sum of its proper divisors (198452516).

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

172740460 is a wasteful number, since it uses less digits than its factorization.

172740460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200913 (or 200911 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 172740460 is about 13143.0765043805. The cubic root of 172740460 is about 556.9266804164.

The spelling of 172740460 in words is "one hundred seventy-two million, seven hundred forty thousand, four hundred sixty".