28813984 has 24 divisors (see below), whose sum is σ = 56857248. Its totient is φ = 14374080.

The previous prime is 28813979. The next prime is 28813991. The reversal of 28813984 is 48931882.

It is a self number, because there is not a number n which added to its sum of digits gives 28813984.

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, 19479 + ... + 20905.

It is an arithmetic number, because the mean of its divisors is an integer number (2369052).

Almost surely, 2^28813984 is an apocalyptic number.

It is an amenable number.

28813984 is a deficient number, since it is larger than the sum of its proper divisors (28043264).

28813984 is a wasteful number, since it uses less digits than its factorization.

28813984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2060 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 28813984 is about 5367.8658701573. The cubic root of 28813984 is about 306.5733763702.

The spelling of 28813984 in words is "twenty-eight million, eight hundred thirteen thousand, nine hundred eighty-four".