30815204 has 12 divisors (see below), whose sum is σ = 61630464. Its totient is φ = 13206504.

The previous prime is 30815189. The next prime is 30815227. The reversal of 30815204 is 40251803.

30815204 is an admirable number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 30815204.

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, 550244 + ... + 550299.

It is an arithmetic number, because the mean of its divisors is an integer number (5135872).

Almost surely, 2^30815204 is an apocalyptic number.

It is an amenable number.

30815204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30815204 is a wasteful number, since it uses less digits than its factorization.

30815204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100554 (or 1100552 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 30815204 is about 5551.1443865207. The cubic root of 30815204 is about 313.5126115530.

The spelling of 30815204 in words is "thirty million, eight hundred fifteen thousand, two hundred four".