30530868 has 12 divisors (see below), whose sum is σ = 71238720. Its totient is φ = 10176952.

The previous prime is 30530849. The next prime is 30530873. The reversal of 30530868 is 86803503.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1272108 + ... + 1272131.

It is an arithmetic number, because the mean of its divisors is an integer number (5936560).

Almost surely, 2^30530868 is an apocalyptic number.

It is an amenable number.

30530868 is an abundant number, since it is smaller than the sum of its proper divisors (40707852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30530868 is a wasteful number, since it uses less digits than its factorization.

30530868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544246 (or 2544244 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 30530868 is about 5525.4744592659. The cubic root of 30530868 is about 312.5453561900.

The spelling of 30530868 in words is "thirty million, five hundred thirty thousand, eight hundred sixty-eight".