28612808 has 16 divisors (see below), whose sum is σ = 61313280. Its totient is φ = 12262608.

The previous prime is 28612789. The next prime is 28612813. The reversal of 28612808 is 80821682.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its 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, 255416 + ... + 255527.

It is an arithmetic number, because the mean of its divisors is an integer number (3832080).

Almost surely, 2^28612808 is an apocalyptic number.

28612808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28612808 is an abundant number, since it is smaller than the sum of its proper divisors (32700472).

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

28612808 is a wasteful number, since it uses less digits than its factorization.

28612808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510956 (or 510952 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 28612808 is about 5349.0941289157. The cubic root of 28612808 is about 305.8582224438.

The spelling of 28612808 in words is "twenty-eight million, six hundred twelve thousand, eight hundred eight".