28443597056 has 288 divisors, whose sum is σ = 73012988160. Its totient is φ = 10765467648.

The previous prime is 28443597019. The next prime is 28443597191. The reversal of 28443597056 is 65079534482.

It is a junction number, because it is equal to n+sod(n) for n = 28443596989 and 28443597007.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90873956 + ... + 90874268.

It is an arithmetic number, because the mean of its divisors is an integer number (253517320).

Almost surely, 2^28443597056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28443597056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36506494080).

28443597056 is an abundant number, since it is smaller than the sum of its proper divisors (44569391104).

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

28443597056 is a wasteful number, since it uses less digits than its factorization.

28443597056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 28443597056 in words is "twenty-eight billion, four hundred forty-three million, five hundred ninety-seven thousand, fifty-six".