30825028 has 24 divisors (see below), whose sum is σ = 60099480. Its totient is φ = 13735680.

The previous prime is 30825017. The next prime is 30825079. The reversal of 30825028 is 82052803.

It can be written as a sum of positive squares in 4 ways, for example, as 4631104 + 26193924 = 2152^2 + 5118^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30824987 and 30825005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8713 + ... + 11728.

It is an arithmetic number, because the mean of its divisors is an integer number (2504145).

Almost surely, 2^30825028 is an apocalyptic number.

It is an amenable number.

30825028 is a deficient number, since it is larger than the sum of its proper divisors (29274452).

30825028 is a wasteful number, since it uses less digits than its factorization.

30825028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20487 (or 20485 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 30825028 is about 5552.0291785977. The cubic root of 30825028 is about 313.5459243364.

The spelling of 30825028 in words is "thirty million, eight hundred twenty-five thousand, twenty-eight".