28986808 has 32 divisors (see below), whose sum is σ = 57024000. Its totient is φ = 13787488.

The previous prime is 28986787. The next prime is 28986809. The reversal of 28986808 is 80868982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28986809) 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, 48093 + ... + 48691.

It is an arithmetic number, because the mean of its divisors is an integer number (1782000).

Almost surely, 2^28986808 is an apocalyptic number.

It is an amenable number.

28986808 is a deficient number, since it is larger than the sum of its proper divisors (28037192).

28986808 is a wasteful number, since it uses less digits than its factorization.

28986808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The square root of 28986808 is about 5383.9398213576. The cubic root of 28986808 is about 307.1850892918.

The spelling of 28986808 in words is "twenty-eight million, nine hundred eighty-six thousand, eight hundred eight".