22443012440 has 32 divisors (see below), whose sum is σ = 50525354880. Its totient is φ = 8972124672.

The previous prime is 22443012407. The next prime is 22443012461. The reversal of 22443012440 is 4421034422.

It is a happy number.

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, 86792 + ... + 228951.

It is an arithmetic number, because the mean of its divisors is an integer number (1578917340).

Almost surely, 2^22443012440 is an apocalyptic number.

22443012440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22443012440 is an abundant number, since it is smaller than the sum of its proper divisors (28082342440).

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

22443012440 is a wasteful number, since it uses less digits than its factorization.

22443012440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317531 (or 317527 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 22443012440 its reverse (4421034422), we get a palindrome (26864046862).

The spelling of 22443012440 in words is "twenty-two billion, four hundred forty-three million, twelve thousand, four hundred forty".