172081924 has 27 divisors (see below), whose sum is σ = 350683893. Its totient is φ = 73670688.

The previous prime is 172081913. The next prime is 172081957. The reversal of 172081924 is 429180271.

The square root of 172081924 is 13118.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9060100 + 163021824 = 3010^2 + 12768^2 .

It is a super-2 number, since 2×172081924² = 59224377135083552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172081924.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 183184 + ... + 184120.

Almost surely, 2^172081924 is an apocalyptic number.

172081924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

172081924 is the 13118-th square number.

It is an amenable number.

172081924 is an abundant number, since it is smaller than the sum of its proper divisors (178601969).

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

172081924 is an frugal number, since it uses more digits than its factorization.

172081924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The cubic root of 172081924 is about 556.2180579394.

The spelling of 172081924 in words is "one hundred seventy-two million, eighty-one thousand, nine hundred twenty-four".