30664816 has 40 divisors (see below), whose sum is σ = 73127264. Its totient is φ = 12130560.

The previous prime is 30664811. The next prime is 30664817. The reversal of 30664816 is 61846603.

30664816 = 36² + 37² + ... + 451².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30664811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9075 + ... + 11986.

Almost surely, 2^30664816 is an apocalyptic number.

It is an amenable number.

30664816 is an abundant number, since it is smaller than the sum of its proper divisors (42462448).

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

30664816 is a wasteful number, since it uses less digits than its factorization.

30664816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21089 (or 21083 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 30664816 is about 5537.5821438603. The cubic root of 30664816 is about 313.0017658547.

The spelling of 30664816 in words is "thirty million, six hundred sixty-four thousand, eight hundred sixteen".