30039028 has 24 divisors (see below), whose sum is σ = 53611488. Its totient is φ = 14724576.

The previous prime is 30039007. The next prime is 30039043. The reversal of 30039028 is 82093003.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30038993 and 30039011.

It is a congruent number.

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, 57175 + ... + 57697.

It is an arithmetic number, because the mean of its divisors is an integer number (2233812).

Almost surely, 2^30039028 is an apocalyptic number.

It is an amenable number.

30039028 is a deficient number, since it is larger than the sum of its proper divisors (23572460).

30039028 is a wasteful number, since it uses less digits than its factorization.

30039028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30039028 is about 5480.7871697412. The cubic root of 30039028 is about 310.8579356182.

The spelling of 30039028 in words is "thirty million, thirty-nine thousand, twenty-eight".