172992723 has 16 divisors (see below), whose sum is σ = 239206656. Its totient is φ = 111114720.

The previous prime is 172992719. The next prime is 172992749. The reversal of 172992723 is 327299271.

It is not a de Polignac number, because 172992723 - 2² = 172992719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172992763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3868 + ... + 18998.

It is an arithmetic number, because the mean of its divisors is an integer number (14950416).

Almost surely, 2^172992723 is an apocalyptic number.

172992723 is a deficient number, since it is larger than the sum of its proper divisors (66213933).

172992723 is a wasteful number, since it uses less digits than its factorization.

172992723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15274.

The product of its digits is 95256, while the sum is 42.

The square root of 172992723 is about 13152.6698050244. The cubic root of 172992723 is about 557.1976527584.

The spelling of 172992723 in words is "one hundred seventy-two million, nine hundred ninety-two thousand, seven hundred twenty-three".