28808550 has 36 divisors (see below), whose sum is σ = 77400180. Its totient is φ = 7682160.

The previous prime is 28808543. The next prime is 28808561. The reversal of 28808550 is 5580882.

28808550 is a `hidden beast` number, since 28 + 80 + 8 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31560 + ... + 32459.

It is an arithmetic number, because the mean of its divisors is an integer number (2150005).

Almost surely, 2^28808550 is an apocalyptic number.

28808550 is an abundant number, since it is smaller than the sum of its proper divisors (48591630).

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

28808550 is a wasteful number, since it uses less digits than its factorization.

28808550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64037 (or 64029 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 28808550 is about 5367.3596861027. The cubic root of 28808550 is about 306.5541030379.

The spelling of 28808550 in words is "twenty-eight million, eight hundred eight thousand, five hundred fifty".