172572368 has 10 divisors (see below), whose sum is σ = 334358994. Its totient is φ = 86286176.

The previous prime is 172572353. The next prime is 172572451. The reversal of 172572368 is 863275271.

It can be written as a sum of positive squares in only one way, i.e., 136235584 + 36336784 = 11672^2 + 6028^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5392871 + ... + 5392902.

Almost surely, 2^172572368 is an apocalyptic number.

It is an amenable number.

172572368 is a deficient number, since it is larger than the sum of its proper divisors (161786626).

172572368 is a wasteful number, since it uses less digits than its factorization.

172572368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10785781 (or 10785775 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 172572368 is about 13136.6802503524. The cubic root of 172572368 is about 556.7459752104.

The spelling of 172572368 in words is "one hundred seventy-two million, five hundred seventy-two thousand, three hundred sixty-eight".