28783268 has 12 divisors (see below), whose sum is σ = 51224880. Its totient is φ = 14147592.

The previous prime is 28783219. The next prime is 28783301. The reversal of 28783268 is 86238782.

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, 60746 + ... + 61217.

It is an arithmetic number, because the mean of its divisors is an integer number (4268740).

Almost surely, 2^28783268 is an apocalyptic number.

It is an amenable number.

28783268 is a deficient number, since it is larger than the sum of its proper divisors (22441612).

28783268 is a wasteful number, since it uses less digits than its factorization.

28783268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122026 (or 122024 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 28783268 is about 5365.0040074542. The cubic root of 28783268 is about 306.4644008589.

The spelling of 28783268 in words is "twenty-eight million, seven hundred eighty-three thousand, two hundred sixty-eight".