28822868 has 12 divisors (see below), whose sum is σ = 52179540. Its totient is φ = 13914432.

The previous prime is 28822853. The next prime is 28822879. The reversal of 28822868 is 86822882.

It can be written as a sum of positive squares in 2 ways, for example, as 13675204 + 15147664 = 3698^2 + 3892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124121 + ... + 124352.

It is an arithmetic number, because the mean of its divisors is an integer number (4348295).

Almost surely, 2^28822868 is an apocalyptic number.

It is an amenable number.

28822868 is a deficient number, since it is larger than the sum of its proper divisors (23356672).

28822868 is a wasteful number, since it uses less digits than its factorization.

28822868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248506 (or 248504 counting only the distinct ones).

The product of its digits is 196608, while the sum is 44.

The square root of 28822868 is about 5368.6933233330. The cubic root of 28822868 is about 306.6048809573.

The spelling of 28822868 in words is "twenty-eight million, eight hundred twenty-two thousand, eight hundred sixty-eight".