22330781256 has 128 divisors (see below), whose sum is σ = 67826626560. Its totient is φ = 5980800000.

The previous prime is 22330781233. The next prime is 22330781257. The reversal of 22330781256 is 65218703322.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22330781257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701281 + ... + 732431.

It is an arithmetic number, because the mean of its divisors is an integer number (529895520).

Almost surely, 2^22330781256 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 22330781256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33913313280).

22330781256 is an abundant number, since it is smaller than the sum of its proper divisors (45495845304).

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

22330781256 is a wasteful number, since it uses less digits than its factorization.

22330781256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31435 (or 31431 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 22330781256 in words is "twenty-two billion, three hundred thirty million, seven hundred eighty-one thousand, two hundred fifty-six".