30664628 has 6 divisors (see below), whose sum is σ = 53663106. Its totient is φ = 15332312.

The previous prime is 30664609. The next prime is 30664637. The reversal of 30664628 is 82646603.

It can be written as a sum of positive squares in only one way, i.e., 24720784 + 5943844 = 4972^2 + 2438^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833075 + ... + 3833082.

It is an arithmetic number, because the mean of its divisors is an integer number (8943851).

Almost surely, 2^30664628 is an apocalyptic number.

It is an amenable number.

30664628 is a deficient number, since it is larger than the sum of its proper divisors (22998478).

30664628 is a wasteful number, since it uses less digits than its factorization.

30664628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7666161 (or 7666159 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 30664628 is about 5537.5651689168. The cubic root of 30664628 is about 313.0011262025.

The spelling of 30664628 in words is "thirty million, six hundred sixty-four thousand, six hundred twenty-eight".