28450985168 has 40 divisors (see below), whose sum is σ = 58081848000. Its totient is φ = 13463587584.

The previous prime is 28450985161. The next prime is 28450985201. The reversal of 28450985168 is 86158905482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28450985161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268733 + ... + 359331.

It is an arithmetic number, because the mean of its divisors is an integer number (1452046200).

Almost surely, 2^28450985168 is an apocalyptic number.

It is an amenable number.

28450985168 is an abundant number, since it is smaller than the sum of its proper divisors (29630862832).

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

28450985168 is a wasteful number, since it uses less digits than its factorization.

28450985168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91659 (or 91653 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 56.

The spelling of 28450985168 in words is "twenty-eight billion, four hundred fifty million, nine hundred eighty-five thousand, one hundred sixty-eight".