172992812 has 12 divisors (see below), whose sum is σ = 303335760. Its totient is φ = 86325456.

The previous prime is 172992791. The next prime is 172992851. The reversal of 172992812 is 218299271.

172992812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 172992812.

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, 40448 + ... + 44519.

It is an arithmetic number, because the mean of its divisors is an integer number (25277980).

Almost surely, 2^172992812 is an apocalyptic number.

It is an amenable number.

172992812 is a deficient number, since it is larger than the sum of its proper divisors (130342948).

172992812 is a wasteful number, since it uses less digits than its factorization.

172992812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85480 (or 85478 counting only the distinct ones).

The product of its digits is 36288, while the sum is 41.

The square root of 172992812 is about 13152.6731883675. The cubic root of 172992812 is about 557.1977483127.

The spelling of 172992812 in words is "one hundred seventy-two million, nine hundred ninety-two thousand, eight hundred twelve".