172887180 has 24 divisors (see below), whose sum is σ = 484084272. Its totient is φ = 46103232.

The previous prime is 172887179. The next prime is 172887181. The reversal of 172887180 is 81788271.

172887180 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (172887179) and next prime (172887181).

It is not an unprimeable number, because it can be changed into a prime (172887181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440667 + ... + 1440786.

It is an arithmetic number, because the mean of its divisors is an integer number (20170178).

Almost surely, 2^172887180 is an apocalyptic number.

172887180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172887180 is an abundant number, since it is smaller than the sum of its proper divisors (311197092).

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

172887180 is a wasteful number, since it uses less digits than its factorization.

172887180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881465 (or 2881463 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 42.

The square root of 172887180 is about 13148.6569656372. The cubic root of 172887180 is about 557.0843141267.

The spelling of 172887180 in words is "one hundred seventy-two million, eight hundred eighty-seven thousand, one hundred eighty".