22440140244 has 36 divisors (see below), whose sum is σ = 57308477044. Its totient is φ = 7402931712.

The previous prime is 22440140243. The next prime is 22440140257. The reversal of 22440140244 is 44204104422.

It can be written as a sum of positive squares in 2 ways, for example, as 6377619600 + 16062520644 = 79860^2 + 126738^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440140243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3209587 + ... + 3216570.

Almost surely, 2^22440140244 is an apocalyptic number.

It is an amenable number.

22440140244 is an abundant number, since it is smaller than the sum of its proper divisors (34868336800).

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

22440140244 is a wasteful number, since it uses less digits than its factorization.

22440140244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426264 (or 6426259 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 22440140244 its reverse (44204104422), we get a palindrome (66644244666).

The spelling of 22440140244 in words is "twenty-two billion, four hundred forty million, one hundred forty thousand, two hundred forty-four".