30704864 has 24 divisors (see below), whose sum is σ = 61011720. Its totient is φ = 15209856.

The previous prime is 30704837. The next prime is 30704867. The reversal of 30704864 is 46840703.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 30704864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30704867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (2542155).

Almost surely, 2^30704864 is an apocalyptic number.

It is an amenable number.

30704864 is a deficient number, since it is larger than the sum of its proper divisors (30306856).

30704864 is a wasteful number, since it uses less digits than its factorization.

30704864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8922 (or 8914 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 30704864 is about 5541.1969826022. The cubic root of 30704864 is about 313.1379658324.

The spelling of 30704864 in words is "thirty million, seven hundred four thousand, eight hundred sixty-four".