28869224440 has 32 divisors (see below), whose sum is σ = 74235149280. Its totient is φ = 9898019712.

The previous prime is 28869224437. The next prime is 28869224477. The reversal of 28869224440 is 4442296882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51551907 + ... + 51552466.

It is an arithmetic number, because the mean of its divisors is an integer number (2319848415).

Almost surely, 2^28869224440 is an apocalyptic number.

28869224440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28869224440 is an abundant number, since it is smaller than the sum of its proper divisors (45365924840).

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

28869224440 is a wasteful number, since it uses less digits than its factorization.

28869224440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103104391 (or 103104387 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 28869224440 in words is "twenty-eight billion, eight hundred sixty-nine million, two hundred twenty-four thousand, four hundred forty".