28088888 has 16 divisors (see below), whose sum is σ = 54956880. Its totient is φ = 13433728.

The previous prime is 28088861. The next prime is 28088903. The reversal of 28088888 is 88888082.

28088888 is a modest number, since divided by 8888 gives 2808 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76145 + ... + 76512.

It is an arithmetic number, because the mean of its divisors is an integer number (3434805).

Almost surely, 2^28088888 is an apocalyptic number.

It is an amenable number.

28088888 is a deficient number, since it is larger than the sum of its proper divisors (26867992).

28088888 is a wasteful number, since it uses less digits than its factorization.

28088888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152686 (or 152682 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 50.

The square root of 28088888 is about 5299.8950933014. The cubic root of 28088888 is about 303.9798867118.

The spelling of 28088888 in words is "twenty-eight million, eighty-eight thousand, eight hundred eighty-eight".