28533868 has 24 divisors (see below), whose sum is σ = 55805904. Its totient is φ = 12652800.

The previous prime is 28533859. The next prime is 28533881. The reversal of 28533868 is 86833582.

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 7 ways as a sum of consecutive naturals, for example, 6105 + ... + 9712.

It is an arithmetic number, because the mean of its divisors is an integer number (2325246).

Almost surely, 2^28533868 is an apocalyptic number.

It is an amenable number.

28533868 is a deficient number, since it is larger than the sum of its proper divisors (27272036).

28533868 is a wasteful number, since it uses less digits than its factorization.

28533868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15873 (or 15871 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 28533868 is about 5341.7102130310. The cubic root of 28533868 is about 305.5766855152.

The spelling of 28533868 in words is "twenty-eight million, five hundred thirty-three thousand, eight hundred sixty-eight".