28259788288 has 40 divisors (see below), whose sum is σ = 56700879840. Its totient is φ = 14070712320.

The previous prime is 28259788243. The next prime is 28259788303. The reversal of 28259788288 is 88288795282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6898 + ... + 237838.

It is an arithmetic number, because the mean of its divisors is an integer number (1417521996).

Almost surely, 2^28259788288 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 28259788288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28350439920).

28259788288 is an abundant number, since it is smaller than the sum of its proper divisors (28441091552).

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

28259788288 is an equidigital number, since it uses as much as digits as its factorization.

28259788288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231198 (or 231182 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 67.

The spelling of 28259788288 in words is "twenty-eight billion, two hundred fifty-nine million, seven hundred eighty-eight thousand, two hundred eighty-eight".