30690864 has 30 divisors (see below), whose sum is σ = 85892196. Its totient is φ = 10230240.

The previous prime is 30690853. The next prime is 30690883. The reversal of 30690864 is 46809603.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 5 ways as a sum of consecutive naturals, for example, 106422 + ... + 106709.

Almost surely, 2^30690864 is an apocalyptic number.

It is an amenable number.

30690864 is an abundant number, since it is smaller than the sum of its proper divisors (55201332).

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

30690864 is a wasteful number, since it uses less digits than its factorization.

30690864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213145 (or 213136 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 30690864 is about 5539.9335736090. The cubic root of 30690864 is about 313.0903664469.

The spelling of 30690864 in words is "thirty million, six hundred ninety thousand, eight hundred sixty-four".