28284907056 has 160 divisors (see below), whose sum is σ = 84481259520. Its totient is φ = 7987617792.

The previous prime is 28284907033. The next prime is 28284907081. The reversal of 28284907056 is 65070948282.

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, 17578380 + ... + 17579988.

It is an arithmetic number, because the mean of its divisors is an integer number (528007872).

Almost surely, 2^28284907056 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 28284907056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42240629760).

28284907056 is an abundant number, since it is smaller than the sum of its proper divisors (56196352464).

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

28284907056 is a wasteful number, since it uses less digits than its factorization.

28284907056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 28284907056 in words is "twenty-eight billion, two hundred eighty-four million, nine hundred seven thousand, fifty-six".