22442056 has 64 divisors (see below), whose sum is σ = 53625600. Its totient is φ = 8563968.

The previous prime is 22442029. The next prime is 22442081. The reversal of 22442056 is 65024422.

It is a self number, because there is not a number n which added to its sum of digits gives 22442056.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20581 + ... + 21643.

It is an arithmetic number, because the mean of its divisors is an integer number (837900).

Almost surely, 2^22442056 is an apocalyptic number.

22442056 is a gapful number since it is divisible by the number (26) 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 22442056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26812800).

22442056 is an abundant number, since it is smaller than the sum of its proper divisors (31183544).

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

22442056 is a wasteful number, since it uses less digits than its factorization.

22442056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 22442056 is about 4737.3047189304. The cubic root of 22442056 is about 282.0682563680.

Adding to 22442056 its reverse (65024422), we get a palindrome (87466478).

The spelling of 22442056 in words is "twenty-two million, four hundred forty-two thousand, fifty-six".