30172 has 12 divisors (see below), whose sum is σ = 55720. Its totient is φ = 14256.

The previous prime is 30169. The next prime is 30181. The reversal of 30172 is 27103.

It is a congruent number.

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, 123 + ... + 274.

2³⁰¹⁷² is an apocalyptic number.

It is an amenable number.

30172 is a deficient number, since it is larger than the sum of its proper divisors (25548).

30172 is a wasteful number, since it uses less digits than its factorization.

30172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 30172 is about 173.7008923408. The cubic root of 30172 is about 31.1315945984.

Adding to 30172 its reverse (27103), we get a palindrome (57275).

It can be divided in two parts, 301 and 72, that added together give a palindrome (373).

The spelling of 30172 in words is "thirty thousand, one hundred seventy-two".