30712564 has 12 divisors (see below), whose sum is σ = 53983300. Its totient is φ = 15288768.

The previous prime is 30712559. The next prime is 30712571. The reversal of 30712564 is 46521703.

It can be written as a sum of positive squares in 2 ways, for example, as 24502500 + 6210064 = 4950^2 + 2492^2 .

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, 15849 + ... + 17680.

Almost surely, 2^30712564 is an apocalyptic number.

It is an amenable number.

30712564 is a deficient number, since it is larger than the sum of its proper divisors (23270736).

30712564 is a wasteful number, since it uses less digits than its factorization.

30712564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33762 (or 33760 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30712564 is about 5541.8917347779. The cubic root of 30712564 is about 313.1641393274.

The spelling of 30712564 in words is "thirty million, seven hundred twelve thousand, five hundred sixty-four".