30947664 has 40 divisors (see below), whose sum is σ = 87217632. Its totient is φ = 9377920.

The previous prime is 30947639. The next prime is 30947671. The reversal of 30947664 is 46674903.

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 7 ways as a sum of consecutive naturals, for example, 28779 + ... + 29834.

Almost surely, 2^30947664 is an apocalyptic number.

It is an amenable number.

30947664 is an abundant number, since it is smaller than the sum of its proper divisors (56269968).

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

30947664 is a wasteful number, since it uses less digits than its factorization.

30947664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58635 (or 58629 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 30947664 is about 5563.0624659445. The cubic root of 30947664 is about 313.9611836205.

The spelling of 30947664 in words is "thirty million, nine hundred forty-seven thousand, six hundred sixty-four".