30718772 has 24 divisors (see below), whose sum is σ = 63557760. Its totient is φ = 12710880.

The previous prime is 30718741. The next prime is 30718783. The reversal of 30718772 is 27781703.

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, 18104 + ... + 19727.

It is an arithmetic number, because the mean of its divisors is an integer number (2648240).

Almost surely, 2^30718772 is an apocalyptic number.

It is an amenable number.

30718772 is an abundant number, since it is smaller than the sum of its proper divisors (32838988).

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

30718772 is a wasteful number, since it uses less digits than its factorization.

30718772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37871 (or 37869 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 30718772 is about 5542.4518040304. The cubic root of 30718772 is about 313.1852380977.

The spelling of 30718772 in words is "thirty million, seven hundred eighteen thousand, seven hundred seventy-two".