172349904 has 20 divisors (see below), whose sum is σ = 445237376. Its totient is φ = 57449952.

The previous prime is 172349899. The next prime is 172349923. The reversal of 172349904 is 409943271.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 1795264 + ... + 1795359.

Almost surely, 2^172349904 is an apocalyptic number.

It is an amenable number.

172349904 is an abundant number, since it is smaller than the sum of its proper divisors (272887472).

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

172349904 is a wasteful number, since it uses less digits than its factorization.

172349904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590634 (or 3590628 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 172349904 is about 13128.2102359766. The cubic root of 172349904 is about 556.5066375587.

The spelling of 172349904 in words is "one hundred seventy-two million, three hundred forty-nine thousand, nine hundred four".