172457868 has 24 divisors (see below), whose sum is σ = 438984000. Its totient is φ = 52259920.

The previous prime is 172457863. The next prime is 172457891. The reversal of 172457868 is 868754271.

It is not an unprimeable number, because it can be changed into a prime (172457861) 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, 653118 + ... + 653381.

It is an arithmetic number, because the mean of its divisors is an integer number (18291000).

Almost surely, 2^172457868 is an apocalyptic number.

It is an amenable number.

172457868 is an abundant number, since it is smaller than the sum of its proper divisors (266526132).

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

172457868 is a wasteful number, since it uses less digits than its factorization.

172457868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306517 (or 1306515 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 172457868 is about 13132.3215007858. The cubic root of 172457868 is about 556.6228162159.

The spelling of 172457868 in words is "one hundred seventy-two million, four hundred fifty-seven thousand, eight hundred sixty-eight".