172789368 has 32 divisors (see below), whose sum is σ = 432766800. Its totient is φ = 57490688.

The previous prime is 172789349. The next prime is 172789373. The reversal of 172789368 is 863987271.

It is a self number, because there is not a number n which added to its sum of digits gives 172789368.

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 in 7 ways as a sum of consecutive naturals, for example, 7330 + ... + 19982.

Almost surely, 2^172789368 is an apocalyptic number.

It is an amenable number.

172789368 is an abundant number, since it is smaller than the sum of its proper divisors (259977432).

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

172789368 is a wasteful number, since it uses less digits than its factorization.

172789368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231 (or 13227 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 172789368 is about 13144.9369720817. The cubic root of 172789368 is about 556.9792363334.

The spelling of 172789368 in words is "one hundred seventy-two million, seven hundred eighty-nine thousand, three hundred sixty-eight".