28243965700 has 36 divisors (see below), whose sum is σ = 61353924660. Its totient is φ = 11285693440.

The previous prime is 28243965683. The next prime is 28243965719. The reversal of 28243965700 is 756934282.

It can be written as a sum of positive squares in 6 ways, for example, as 533702404 + 27710263296 = 23102^2 + 166464^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 52885 + ... + 243484.

It is an arithmetic number, because the mean of its divisors is an integer number (1704275685).

Almost surely, 2^28243965700 is an apocalyptic number.

28243965700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28243965700 is an abundant number, since it is smaller than the sum of its proper divisors (33109958960).

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

28243965700 is a wasteful number, since it uses less digits than its factorization.

28243965700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297336 (or 297329 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 28243965700 in words is "twenty-eight billion, two hundred forty-three million, nine hundred sixty-five thousand, seven hundred".