30688704 has 42 divisors (see below), whose sum is σ = 87965280. Its totient is φ = 10229376.

The previous prime is 30688703. The next prime is 30688717. The reversal of 30688704 is 40788603.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30688703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26064 + ... + 27215.

Almost surely, 2^30688704 is an apocalyptic number.

It is an amenable number.

30688704 is an abundant number, since it is smaller than the sum of its proper divisors (57276576).

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

30688704 is a wasteful number, since it uses less digits than its factorization.

30688704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53297 (or 53284 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 30688704 is about 5539.7386219929. The cubic root of 30688704 is about 313.0830212528.

The spelling of 30688704 in words is "thirty million, six hundred eighty-eight thousand, seven hundred four".