172189124 has 24 divisors (see below), whose sum is σ = 330062040. Its totient is φ = 78235136.

The previous prime is 172189123. The next prime is 172189177. The reversal of 172189124 is 421981271.

It can be written as a sum of positive squares in 4 ways, for example, as 27227524 + 144961600 = 5218^2 + 12040^2 .

It is not an unprimeable number, because it can be changed into a prime (172189123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41687 + ... + 45630.

It is an arithmetic number, because the mean of its divisors is an integer number (13752585).

Almost surely, 2^172189124 is an apocalyptic number.

It is an amenable number.

172189124 is a deficient number, since it is larger than the sum of its proper divisors (157872916).

172189124 is a wasteful number, since it uses less digits than its factorization.

172189124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87367 (or 87365 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 172189124 is about 13122.0853525650. The cubic root of 172189124 is about 556.3335343301. Note that the first 3 decimals are identical.

The spelling of 172189124 in words is "one hundred seventy-two million, one hundred eighty-nine thousand, one hundred twenty-four".