22404240440 has 32 divisors (see below), whose sum is σ = 50700941280. Its totient is φ = 8909891712.

The previous prime is 22404240427. The next prime is 22404240457. The reversal of 22404240440 is 4404240422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611884 + ... + 1625723.

It is an arithmetic number, because the mean of its divisors is an integer number (1584404415).

Almost surely, 2^22404240440 is an apocalyptic number.

22404240440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22404240440 is an abundant number, since it is smaller than the sum of its proper divisors (28296700840).

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

22404240440 is a wasteful number, since it uses less digits than its factorization.

22404240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237791 (or 3237787 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 22404240440 its reverse (4404240422), we get a palindrome (26808480862).

The spelling of 22404240440 in words is "twenty-two billion, four hundred four million, two hundred forty thousand, four hundred forty".