28182344256 has 420 divisors, whose sum is σ = 92707266960. Its totient is φ = 8458560000.

The previous prime is 28182344233. The next prime is 28182344273. The reversal of 28182344256 is 65244328182.

28182344256 is a `hidden beast` number, since 2 + 81 + 82 + 3 + 442 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 112280131 + ... + 112280381.

It is an arithmetic number, because the mean of its divisors is an integer number (220731588).

Almost surely, 2^28182344256 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 28182344256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46353633480).

28182344256 is an abundant number, since it is smaller than the sum of its proper divisors (64524922704).

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

28182344256 is a wasteful number, since it uses less digits than its factorization.

28182344256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 446 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The spelling of 28182344256 in words is "twenty-eight billion, one hundred eighty-two million, three hundred forty-four thousand, two hundred fifty-six".