172056180 has 48 divisors (see below), whose sum is σ = 482799744. Its totient is φ = 45782400.

The previous prime is 172056163. The next prime is 172056211. The reversal of 172056180 is 81650271.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 27330 + ... + 33030.

It is an arithmetic number, because the mean of its divisors is an integer number (10058328).

Almost surely, 2^172056180 is an apocalyptic number.

172056180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172056180 is an abundant number, since it is smaller than the sum of its proper divisors (310743564).

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

172056180 is a wasteful number, since it uses less digits than its factorization.

172056180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6216 (or 6214 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 172056180 is about 13117.0187161565. The cubic root of 172056180 is about 556.1903192293.

The spelling of 172056180 in words is "one hundred seventy-two million, fifty-six thousand, one hundred eighty".