30028056 has 32 divisors (see below), whose sum is σ = 79022400. Its totient is φ = 9482400.

The previous prime is 30028027. The next prime is 30028091. The reversal of 30028056 is 65082003.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 32470 + ... + 33381.

It is an arithmetic number, because the mean of its divisors is an integer number (2469450).

Almost surely, 2^30028056 is an apocalyptic number.

It is an amenable number.

30028056 is an abundant number, since it is smaller than the sum of its proper divisors (48994344).

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

30028056 is a wasteful number, since it uses less digits than its factorization.

30028056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65879 (or 65875 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 30028056 is about 5479.7861272134. The cubic root of 30028056 is about 310.8200832104.

The spelling of 30028056 in words is "thirty million, twenty-eight thousand, fifty-six".