30772172 has 24 divisors (see below), whose sum is σ = 57024240. Its totient is φ = 14489280.

The previous prime is 30772163. The next prime is 30772187. The reversal of 30772172 is 27127703.

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, 12638 + ... + 14874.

It is an arithmetic number, because the mean of its divisors is an integer number (2376010).

Almost surely, 2^30772172 is an apocalyptic number.

It is an amenable number.

30772172 is a deficient number, since it is larger than the sum of its proper divisors (26252068).

30772172 is a wasteful number, since it uses less digits than its factorization.

30772172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441 (or 2439 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 30772172 is about 5547.2670748757. The cubic root of 30772172 is about 313.3666083066.

Adding to 30772172 its reverse (27127703), we get a palindrome (57899875).

The spelling of 30772172 in words is "thirty million, seven hundred seventy-two thousand, one hundred seventy-two".