28290882312 has 192 divisors, whose sum is σ = 99066240000. Its totient is φ = 7348242240.

The previous prime is 28290882307. The next prime is 28290882313. The reversal of 28290882312 is 21328809282.

It is not an unprimeable number, because it can be changed into a prime (28290882313) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55189 + ... + 244187.

It is an arithmetic number, because the mean of its divisors is an integer number (515970000).

Almost surely, 2^28290882312 is an apocalyptic number.

28290882312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28290882312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49533120000).

28290882312 is an abundant number, since it is smaller than the sum of its proper divisors (70775357688).

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

28290882312 is a wasteful number, since it uses less digits than its factorization.

28290882312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189038 (or 189022 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 28290882312 in words is "twenty-eight billion, two hundred ninety million, eight hundred eighty-two thousand, three hundred twelve".