22281449224328 has 256 divisors, whose sum is σ = 53508310732800. Its totient is φ = 8467684392960.

The previous prime is 22281449224303. The next prime is 22281449224337. The reversal of 22281449224328 is 82342294418222.

It is a happy number.

It is a Cunningham number, because it is equal to 4720323²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 22281449224328.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3049325651 + ... + 3049332957.

It is an arithmetic number, because the mean of its divisors is an integer number (209016838800).

Almost surely, 2^{22281449224328} is an apocalyptic number.

22281449224328 is a gapful number since it is divisible by the number (28) 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 22281449224328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26754155366400).

22281449224328 is an abundant number, since it is smaller than the sum of its proper divisors (31226861508472).

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

22281449224328 is a wasteful number, since it uses less digits than its factorization.

22281449224328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260 (or 8256 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 53.

The spelling of 22281449224328 in words is "twenty-two trillion, two hundred eighty-one billion, four hundred forty-nine million, two hundred twenty-four thousand, three hundred twenty-eight".