28508575300 has 18 divisors (see below), whose sum is σ = 61863608618. Its totient is φ = 11403430080.

The previous prime is 28508575297. The next prime is 28508575307. The reversal of 28508575300 is 357580582.

It can be written as a sum of positive squares in 3 ways, for example, as 3655744 + 28504919556 = 1912^2 + 168834^2 .

It is not an unprimeable number, because it can be changed into a prime (28508575307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142542777 + ... + 142542976.

Almost surely, 2^28508575300 is an apocalyptic number.

28508575300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28508575300 is an abundant number, since it is smaller than the sum of its proper divisors (33355033318).

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

28508575300 is a wasteful number, since it uses less digits than its factorization.

28508575300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285085767 (or 285085760 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 28508575300 in words is "twenty-eight billion, five hundred eight million, five hundred seventy-five thousand, three hundred".