30328623 has 12 divisors (see below), whose sum is σ = 47178040. Its totient is φ = 18663696.

The previous prime is 30328609. The next prime is 30328657. The reversal of 30328623 is 32682303.

30328623 is a `hidden beast` number, since 3 + 0 + 32 + 8 + 623 = 666.

It is not a de Polignac number, because 30328623 - 2⁴ = 30328607 is a prime.

It is a super-2 number, since 2×30328623² = 1839650746152258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30328523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129493 + ... + 129726.

Almost surely, 2^30328623 is an apocalyptic number.

30328623 is a deficient number, since it is larger than the sum of its proper divisors (16849417).

30328623 is a wasteful number, since it uses less digits than its factorization.

30328623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259238 (or 259235 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 30328623 is about 5507.1429071707. The cubic root of 30328623 is about 311.8536974324.

The spelling of 30328623 in words is "thirty million, three hundred twenty-eight thousand, six hundred twenty-three".