180172272 has 40 divisors (see below), whose sum is σ = 531938176. Its totient is φ = 51477696.

The previous prime is 180172261. The next prime is 180172303. The reversal of 180172272 is 272271081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267778 + ... + 268449.

Almost surely, 2^180172272 is an apocalyptic number.

180172272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180172272 is an abundant number, since it is smaller than the sum of its proper divisors (351765904).

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

180172272 is a wasteful number, since it uses less digits than its factorization.

180172272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536245 (or 536239 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 180172272 is about 13422.8265279709. The cubic root of 180172272 is about 564.8016867378.

The spelling of 180172272 in words is "one hundred eighty million, one hundred seventy-two thousand, two hundred seventy-two".