28504008 has 64 divisors (see below), whose sum is σ = 85276800. Its totient is φ = 8769600.

The previous prime is 28504001. The next prime is 28504037. The reversal of 28504008 is 80040582.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28504001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2268 + ... + 7883.

It is an arithmetic number, because the mean of its divisors is an integer number (1332450).

Almost surely, 2^28504008 is an apocalyptic number.

It is an amenable number.

28504008 is an abundant number, since it is smaller than the sum of its proper divisors (56772792).

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

28504008 is a wasteful number, since it uses less digits than its factorization.

28504008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10179 (or 10169 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 28504008 is about 5338.9144964122. The cubic root of 28504008 is about 305.4700554508.

The spelling of 28504008 in words is "twenty-eight million, five hundred four thousand, eight".