30865028 has 12 divisors (see below), whose sum is σ = 54346320. Its totient is φ = 15337512.

The previous prime is 30865001. The next prime is 30865033. The reversal of 30865028 is 82056803.

It is a junction number, because it is equal to n+sod(n) for n = 30864985 and 30865003.

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, 23018 + ... + 24321.

It is an arithmetic number, because the mean of its divisors is an integer number (4528860).

Almost surely, 2^30865028 is an apocalyptic number.

It is an amenable number.

30865028 is a deficient number, since it is larger than the sum of its proper divisors (23481292).

30865028 is a wasteful number, since it uses less digits than its factorization.

30865028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47506 (or 47504 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 30865028 is about 5555.6302972750. The cubic root of 30865028 is about 313.6814896734.

The spelling of 30865028 in words is "thirty million, eight hundred sixty-five thousand, twenty-eight".