30933028 has 12 divisors (see below), whose sum is σ = 61866112. Its totient is φ = 13257000.

The previous prime is 30933011. The next prime is 30933041. The reversal of 30933028 is 82033903.

It is a happy number.

30933028 is an admirable number.

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 Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1104751 = 30933028 / (3 + 0 + 9 + 3 + 3 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 30932987 and 30933005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552348 + ... + 552403.

Almost surely, 2^30933028 is an apocalyptic number.

It is an amenable number.

30933028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30933028 is a wasteful number, since it uses less digits than its factorization.

30933028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104762 (or 1104760 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30933028 is about 5561.7468478887. The cubic root of 30933028 is about 313.9116821949.

The spelling of 30933028 in words is "thirty million, nine hundred thirty-three thousand, twenty-eight".