28828808 has 16 divisors (see below), whose sum is σ = 54162060. Its totient is φ = 14385600.

The previous prime is 28828801. The next prime is 28828819. The reversal of 28828808 is 80882882.

It can be written as a sum of positive squares in 2 ways, for example, as 27478564 + 1350244 = 5242^2 + 1162^2 .

It is a super-2 number, since 2×28828808² = 1662200341401728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28828801) 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, 998 + ... + 7658.

Almost surely, 2^28828808 is an apocalyptic number.

It is an amenable number.

28828808 is a deficient number, since it is larger than the sum of its proper divisors (25333252).

28828808 is a wasteful number, since it uses less digits than its factorization.

28828808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208 (or 7204 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 44.

The square root of 28828808 is about 5369.2465020708. The cubic root of 28828808 is about 306.6259418720.

The spelling of 28828808 in words is "twenty-eight million, eight hundred twenty-eight thousand, eight hundred eight".