30664528 has 20 divisors (see below), whose sum is σ = 60535188. Its totient is φ = 15042560.

The previous prime is 30664489. The next prime is 30664541. The reversal of 30664528 is 82546603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23309584 + 7354944 = 4828^2 + 2712^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30664493 and 30664502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17233 + ... + 18928.

Almost surely, 2^30664528 is an apocalyptic number.

It is an amenable number.

30664528 is a deficient number, since it is larger than the sum of its proper divisors (29870660).

30664528 is a wasteful number, since it uses less digits than its factorization.

30664528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36222 (or 36216 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 30664528 is about 5537.5561396703. The cubic root of 30664528 is about 313.0007859609. Note that the first 3 decimals are identical.

The spelling of 30664528 in words is "thirty million, six hundred sixty-four thousand, five hundred twenty-eight".