172381264 has 20 divisors (see below), whose sum is σ = 364351680. Its totient is φ = 78355040.

The previous prime is 172381259. The next prime is 172381277. The reversal of 172381264 is 462183271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489544 + ... + 489895.

It is an arithmetic number, because the mean of its divisors is an integer number (18217584).

Almost surely, 2^172381264 is an apocalyptic number.

It is an amenable number.

172381264 is an abundant number, since it is smaller than the sum of its proper divisors (191970416).

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

172381264 is a wasteful number, since it uses less digits than its factorization.

172381264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979458 (or 979452 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 172381264 is about 13129.4045561861. The cubic root of 172381264 is about 556.5403886456.

The spelling of 172381264 in words is "one hundred seventy-two million, three hundred eighty-one thousand, two hundred sixty-four".