28508828 has 12 divisors (see below), whose sum is σ = 51051000. Its totient is φ = 13922832.

The previous prime is 28508819. The next prime is 28508839. The reversal of 28508828 is 82880582.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82703 + ... + 83046.

It is an arithmetic number, because the mean of its divisors is an integer number (4254250).

Almost surely, 2^28508828 is an apocalyptic number.

It is an amenable number.

28508828 is a deficient number, since it is larger than the sum of its proper divisors (22542172).

28508828 is a wasteful number, since it uses less digits than its factorization.

28508828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165796 (or 165794 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 41.

The square root of 28508828 is about 5339.3658799524. The cubic root of 28508828 is about 305.4872727101.

The spelling of 28508828 in words is "twenty-eight million, five hundred eight thousand, eight hundred twenty-eight".