30990976 has 32 divisors (see below), whose sum is σ = 64994400. Its totient is φ = 14678784.

The previous prime is 30990961. The next prime is 30990997. The reversal of 30990976 is 67909903.

It is a tau number, because it is divible by the number of its divisors (32).

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, 3940 + ... + 8803.

It is an arithmetic number, because the mean of its divisors is an integer number (2031075).

Almost surely, 2^30990976 is an apocalyptic number.

It is an amenable number.

30990976 is an abundant number, since it is smaller than the sum of its proper divisors (34003424).

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

30990976 is a wasteful number, since it uses less digits than its factorization.

30990976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12776 (or 12764 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 30990976 is about 5566.9539247240. The cubic root of 30990976 is about 314.1075807552.

The spelling of 30990976 in words is "thirty million, nine hundred ninety thousand, nine hundred seventy-six".