28985888 has 24 divisors (see below), whose sum is σ = 59548608. Its totient is φ = 13862464.

The previous prime is 28985863. The next prime is 28985903. The reversal of 28985888 is 88858982.

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, 18956 + ... + 20427.

It is an arithmetic number, because the mean of its divisors is an integer number (2481192).

Almost surely, 2^28985888 is an apocalyptic number.

It is an amenable number.

28985888 is an abundant number, since it is smaller than the sum of its proper divisors (30562720).

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

28985888 is a wasteful number, since it uses less digits than its factorization.

28985888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39416 (or 39408 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 56.

The square root of 28985888 is about 5383.8543813889. The cubic root of 28985888 is about 307.1818393851.

The spelling of 28985888 in words is "twenty-eight million, nine hundred eighty-five thousand, eight hundred eighty-eight".