30900864 has 32 divisors (see below), whose sum is σ = 82081440. Its totient is φ = 10300160.

The previous prime is 30900853. The next prime is 30900871. The reversal of 30900864 is 46800903.

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

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, 39852 + ... + 40619.

It is an arithmetic number, because the mean of its divisors is an integer number (2565045).

Almost surely, 2^30900864 is an apocalyptic number.

It is an amenable number.

30900864 is an abundant number, since it is smaller than the sum of its proper divisors (51180576).

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

30900864 is an equidigital number, since it uses as much as digits as its factorization.

30900864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80488 (or 80476 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30900864 is about 5558.8545582701. The cubic root of 30900864 is about 313.8028432234.

The spelling of 30900864 in words is "thirty million, nine hundred thousand, eight hundred sixty-four".