28090884 has 24 divisors (see below), whose sum is σ = 65681728. Its totient is φ = 9344160.

The previous prime is 28090877. The next prime is 28090897. The reversal of 28090884 is 48809082.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4329 + ... + 8655.

Almost surely, 2^28090884 is an apocalyptic number.

It is an amenable number.

28090884 is an abundant number, since it is smaller than the sum of its proper divisors (37590844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28090884 is a wasteful number, since it uses less digits than its factorization.

28090884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875 (or 4873 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28090884 is about 5300.0833955703. The cubic root of 28090884 is about 303.9870868245.

The spelling of 28090884 in words is "twenty-eight million, ninety thousand, eight hundred eighty-four".