28865256882 has 96 divisors (see below), whose sum is σ = 72642310272. Its totient is φ = 7484928000.

The previous prime is 28865256877. The next prime is 28865256911.

28865256882 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3253132 + ... + 3261992.

It is an arithmetic number, because the mean of its divisors is an integer number (756690732).

Almost surely, 2^28865256882 is an apocalyptic number.

28865256882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28865256882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36321155136).

28865256882 is an abundant number, since it is smaller than the sum of its proper divisors (43777053390).

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

28865256882 is a wasteful number, since it uses less digits than its factorization.

28865256882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536 (or 9525 counting only the distinct ones).

The product of its digits is 29491200, while the sum is 60.

The spelling of 28865256882 in words is "twenty-eight billion, eight hundred sixty-five million, two hundred fifty-six thousand, eight hundred eighty-two".