28644316904 has 32 divisors (see below), whose sum is σ = 62633352000. Its totient is φ = 12276134640.

The previous prime is 28644316891. The next prime is 28644316907. The reversal of 28644316904 is 40961344682.

It is not an unprimeable number, because it can be changed into a prime (28644316907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5216702 + ... + 5222189.

It is an arithmetic number, because the mean of its divisors is an integer number (1957292250).

Almost surely, 2^28644316904 is an apocalyptic number.

It is an amenable number.

28644316904 is an abundant number, since it is smaller than the sum of its proper divisors (33989035096).

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

28644316904 is a wasteful number, since it uses less digits than its factorization.

28644316904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438918 (or 10438900 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 28644316904 in words is "twenty-eight billion, six hundred forty-four million, three hundred sixteen thousand, nine hundred four".