28646808 has 16 divisors (see below), whose sum is σ = 71617080. Its totient is φ = 9548928.

The previous prime is 28646777. The next prime is 28646831. The reversal of 28646808 is 80864682.

It is a self number, because there is not a number n which added to its sum of digits gives 28646808.

It is a congruent number.

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, 596785 + ... + 596832.

Almost surely, 2^28646808 is an apocalyptic number.

It is an amenable number.

28646808 is an abundant number, since it is smaller than the sum of its proper divisors (42970272).

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

28646808 is a wasteful number, since it uses less digits than its factorization.

28646808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193626 (or 1193622 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 28646808 is about 5352.2712935725. The cubic root of 28646808 is about 305.9793227944.

The spelling of 28646808 in words is "twenty-eight million, six hundred forty-six thousand, eight hundred eight".