28204808 has 16 divisors (see below), whose sum is σ = 55183680. Its totient is φ = 13489168.

The previous prime is 28204807. The next prime is 28204829. The reversal of 28204808 is 80840282.

It is a super-2 number, since 2×28204808² = 1591022388633728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28204807) by changing a digit.

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, 76460 + ... + 76827.

It is an arithmetic number, because the mean of its divisors is an integer number (3448980).

Almost surely, 2^28204808 is an apocalyptic number.

It is an amenable number.

28204808 is a deficient number, since it is larger than the sum of its proper divisors (26978872).

28204808 is a wasteful number, since it uses less digits than its factorization.

28204808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153316 (or 153312 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 28204808 is about 5310.8198990363. The cubic root of 28204808 is about 304.3974775356.

The spelling of 28204808 in words is "twenty-eight million, two hundred four thousand, eight hundred eight".