30666864 has 20 divisors (see below), whose sum is σ = 79222856. Its totient is φ = 10222272.

The previous prime is 30666859. The next prime is 30666871. The reversal of 30666864 is 46866603.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 319399 + ... + 319494.

Almost surely, 2^30666864 is an apocalyptic number.

It is an amenable number.

30666864 is an abundant number, since it is smaller than the sum of its proper divisors (48555992).

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

30666864 is a wasteful number, since it uses less digits than its factorization.

30666864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638904 (or 638898 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 30666864 is about 5537.7670590230. The cubic root of 30666864 is about 313.0087338116.

The spelling of 30666864 in words is "thirty million, six hundred sixty-six thousand, eight hundred sixty-four".