22244400440 has 32 divisors (see below), whose sum is σ = 50326436160. Its totient is φ = 8848598400.

The previous prime is 22244400433. The next prime is 22244400463. The reversal of 22244400440 is 4400444222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1528976 + ... + 1543455.

It is an arithmetic number, because the mean of its divisors is an integer number (1572701130).

Almost surely, 2^22244400440 is an apocalyptic number.

22244400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22244400440 is an abundant number, since it is smaller than the sum of its proper divisors (28082035720).

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

22244400440 is a wasteful number, since it uses less digits than its factorization.

22244400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072623 (or 3072619 counting only the distinct ones).

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

Adding to 22244400440 its reverse (4400444222), we get a palindrome (26644844662).

The spelling of 22244400440 in words is "twenty-two billion, two hundred forty-four million, four hundred thousand, four hundred forty".