30856912 has 20 divisors (see below), whose sum is σ = 62932480. Its totient is φ = 14616288.

The previous prime is 30856909. The next prime is 30856939. The reversal of 30856912 is 21965803.

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, 50448 + ... + 51055.

It is an arithmetic number, because the mean of its divisors is an integer number (3146624).

Almost surely, 2^30856912 is an apocalyptic number.

It is an amenable number.

30856912 is an abundant number, since it is smaller than the sum of its proper divisors (32075568).

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

30856912 is a wasteful number, since it uses less digits than its factorization.

30856912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101530 (or 101524 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 30856912 is about 5554.8998190786. The cubic root of 30856912 is about 313.6539929421.

The spelling of 30856912 in words is "thirty million, eight hundred fifty-six thousand, nine hundred twelve".