28056888 has 32 divisors (see below), whose sum is σ = 77936400. Its totient is φ = 9352224.

The previous prime is 28056869. The next prime is 28056907. The reversal of 28056888 is 88865082.

28056888 is a `hidden beast` number, since 2 + 8 + 0 + 568 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (28056869) and next prime (28056907).

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, 64731 + ... + 65162.

Almost surely, 2^28056888 is an apocalyptic number.

It is an amenable number.

28056888 is an abundant number, since it is smaller than the sum of its proper divisors (49879512).

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

28056888 is a wasteful number, since it uses less digits than its factorization.

28056888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129908 (or 129898 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 28056888 is about 5296.8753053097. The cubic root of 28056888 is about 303.8644074441.

The spelling of 28056888 in words is "twenty-eight million, fifty-six thousand, eight hundred eighty-eight".