28090008200 has 48 divisors (see below), whose sum is σ = 65359323060. Its totient is φ = 11227392000.

The previous prime is 28090008197. The next prime is 28090008227. The reversal of 28090008200 is 280009082.

It can be written as a sum of positive squares in 6 ways, for example, as 7162913956 + 20927094244 = 84634^2 + 144662^2 .

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 11 ways as a sum of consecutive naturals, for example, 211040 + ... + 317360.

Almost surely, 2^28090008200 is an apocalyptic number.

28090008200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28090008200 is an abundant number, since it is smaller than the sum of its proper divisors (37269314860).

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

28090008200 is a wasteful number, since it uses less digits than its factorization.

28090008200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107658 (or 107649 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 28090008200 in words is "twenty-eight billion, ninety million, eight thousand, two hundred".