180372172 has 12 divisors (see below), whose sum is σ = 315746200. Its totient is φ = 90158976.

The previous prime is 180372169. The next prime is 180372209. The reversal of 180372172 is 271273081.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19579 + ... + 27277.

Almost surely, 2^180372172 is an apocalyptic number.

It is an amenable number.

180372172 is a deficient number, since it is larger than the sum of its proper divisors (135374028).

180372172 is a wasteful number, since it uses less digits than its factorization.

180372172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13560 (or 13558 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 180372172 is about 13430.2707344268. The cubic root of 180372172 is about 565.0104908382.

Subtracting 180372172 from its reverse (271273081), we obtain a palindrome (90900909).

The spelling of 180372172 in words is "one hundred eighty million, three hundred seventy-two thousand, one hundred seventy-two".