30888172 has 24 divisors (see below), whose sum is σ = 64463616. Its totient is φ = 12661968.

The previous prime is 30888127. The next prime is 30888181. The reversal of 30888172 is 27188803.

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, 23338 + ... + 24625.

It is an arithmetic number, because the mean of its divisors is an integer number (2685984).

Almost surely, 2^30888172 is an apocalyptic number.

It is an amenable number.

30888172 is an abundant number, since it is smaller than the sum of its proper divisors (33575444).

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

30888172 is a wasteful number, since it uses less digits than its factorization.

30888172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47997 (or 47995 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 30888172 is about 5557.7128389293. The cubic root of 30888172 is about 313.7598742944.

The spelling of 30888172 in words is "thirty million, eight hundred eighty-eight thousand, one hundred seventy-two".