172939748 has 24 divisors (see below), whose sum is σ = 321871200. Its totient is φ = 81070848.

The previous prime is 172939733. The next prime is 172939757. The reversal of 172939748 is 847939271.

It is a junction number, because it is equal to n+sod(n) for n = 172939696 and 172939705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4358 + ... + 19101.

It is an arithmetic number, because the mean of its divisors is an integer number (13411300).

Almost surely, 2^172939748 is an apocalyptic number.

It is an amenable number.

172939748 is a deficient number, since it is larger than the sum of its proper divisors (148931452).

172939748 is a wasteful number, since it uses less digits than its factorization.

172939748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23579 (or 23577 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 172939748 is about 13150.6558011378. The cubic root of 172939748 is about 557.1407706756.

The spelling of 172939748 in words is "one hundred seventy-two million, nine hundred thirty-nine thousand, seven hundred forty-eight".