166172232 has 32 divisors (see below), whose sum is σ = 418471200. Its totient is φ = 54985344.

The previous prime is 166172231. The next prime is 166172243. The reversal of 166172232 is 232271661.

166172232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166172232² = 55226421375723648, 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 166172232.

It is not an unprimeable number, because it can be changed into a prime (166172231) 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, 21982 + ... + 28557.

It is an arithmetic number, because the mean of its divisors is an integer number (13077225).

Almost surely, 2^166172232 is an apocalyptic number.

166172232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166172232 is an abundant number, since it is smaller than the sum of its proper divisors (252298968).

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

166172232 is a wasteful number, since it uses less digits than its factorization.

166172232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50685 (or 50681 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 166172232 is about 12890.7808917846. The cubic root of 166172232 is about 549.7764733557.

The spelling of 166172232 in words is "one hundred sixty-six million, one hundred seventy-two thousand, two hundred thirty-two".