28032500800 has 42 divisors (see below), whose sum is σ = 68977476218. Its totient is φ = 11212999680.

The previous prime is 28032500779. The next prime is 28032500827. The reversal of 28032500800 is 800523082.

It can be written as a sum of positive squares in 3 ways, for example, as 5287034944 + 22745465856 = 72712^2 + 150816^2 .

It is a super-2 number, since 2×28032500800² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8758557 + ... + 8761756.

Almost surely, 2^28032500800 is an apocalyptic number.

28032500800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28032500800 is an abundant number, since it is smaller than the sum of its proper divisors (40944975418).

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

28032500800 is a wasteful number, since it uses less digits than its factorization.

28032500800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17520335 (or 17520320 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 28032500800 in words is "twenty-eight billion, thirty-two million, five hundred thousand, eight hundred".