172631368 has 64 divisors (see below), whose sum is σ = 403320960. Its totient is φ = 67447296.

The previous prime is 172631357. The next prime is 172631377. The reversal of 172631368 is 863136271.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58996 + ... + 61852.

It is an arithmetic number, because the mean of its divisors is an integer number (6301890).

Almost surely, 2^172631368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172631368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201660480).

172631368 is an abundant number, since it is smaller than the sum of its proper divisors (230689592).

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

172631368 is a wasteful number, since it uses less digits than its factorization.

172631368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966 (or 2962 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 172631368 is about 13138.9256790652. The cubic root of 172631368 is about 556.8094157835.

The spelling of 172631368 in words is "one hundred seventy-two million, six hundred thirty-one thousand, three hundred sixty-eight".