22442321440 has 144 divisors (see below), whose sum is σ = 67283504064. Its totient is φ = 6994982400.

The previous prime is 22442321383. The next prime is 22442321441. The reversal of 22442321440 is 4412324422.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 22442321399 and 22442321408.

It is not an unprimeable number, because it can be changed into a prime (22442321441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43876 + ... + 216355.

It is an arithmetic number, because the mean of its divisors is an integer number (467246556).

Almost surely, 2^22442321440 is an apocalyptic number.

22442321440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22442321440 is an abundant number, since it is smaller than the sum of its proper divisors (44841182624).

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

22442321440 is a wasteful number, since it uses less digits than its factorization.

22442321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260271 (or 260256 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 22442321440 its reverse (4412324422), we get a palindrome (26854645862).

The spelling of 22442321440 in words is "twenty-two billion, four hundred forty-two million, three hundred twenty-one thousand, four hundred forty".