30813204 has 12 divisors (see below), whose sum is σ = 71897504. Its totient is φ = 10271064.

The previous prime is 30813199. The next prime is 30813217. The reversal of 30813204 is 40231803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283872 + ... + 1283895.

Almost surely, 2^30813204 is an apocalyptic number.

It is an amenable number.

30813204 is an abundant number, since it is smaller than the sum of its proper divisors (41084300).

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

30813204 is a wasteful number, since it uses less digits than its factorization.

30813204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567774 (or 2567772 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 30813204 is about 5550.9642405622. The cubic root of 30813204 is about 313.5058287671.

The spelling of 30813204 in words is "thirty million, eight hundred thirteen thousand, two hundred four".