30028880 has 40 divisors (see below), whose sum is σ = 79792512. Its totient is φ = 10295424.

The previous prime is 30028871. The next prime is 30028903. The reversal of 30028880 is 8882003.

It is a tau number, because it is divible by the number of its divisors (40).

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, 26252 + ... + 27371.

Almost surely, 2^30028880 is an apocalyptic number.

It is an amenable number.

30028880 is an abundant number, since it is smaller than the sum of its proper divisors (49763632).

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

30028880 is a wasteful number, since it uses less digits than its factorization.

30028880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53643 (or 53637 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 30028880 is about 5479.8613121137. The cubic root of 30028880 is about 310.8229262560.

The spelling of 30028880 in words is "thirty million, twenty-eight thousand, eight hundred eighty".