28995788 has 12 divisors (see below), whose sum is σ = 52379712. Its totient is φ = 14030160.

The previous prime is 28995739. The next prime is 28995809. The reversal of 28995788 is 88759982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116795 + ... + 117042.

It is an arithmetic number, because the mean of its divisors is an integer number (4364976).

Almost surely, 2^28995788 is an apocalyptic number.

It is an amenable number.

28995788 is a deficient number, since it is larger than the sum of its proper divisors (23383924).

28995788 is a wasteful number, since it uses less digits than its factorization.

28995788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233872 (or 233870 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 56.

The square root of 28995788 is about 5384.7737185512. The cubic root of 28995788 is about 307.2168075973.

The spelling of 28995788 in words is "twenty-eight million, nine hundred ninety-five thousand, seven hundred eighty-eight".