30028872 has 32 divisors (see below), whose sum is σ = 75852000. Its totient is φ = 9905664.

The previous prime is 30028871. The next prime is 30028903. The reversal of 30028872 is 27882003.

It is not an unprimeable number, because it can be changed into a prime (30028871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4122 + ... + 8777.

It is an arithmetic number, because the mean of its divisors is an integer number (2370375).

Almost surely, 2^30028872 is an apocalyptic number.

It is an amenable number.

30028872 is an abundant number, since it is smaller than the sum of its proper divisors (45823128).

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

30028872 is a wasteful number, since it uses less digits than its factorization.

30028872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13005 (or 13001 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30028872 is about 5479.8605821681. The cubic root of 30028872 is about 310.8228986539.

The spelling of 30028872 in words is "thirty million, twenty-eight thousand, eight hundred seventy-two".