22440040320 has 64 divisors (see below), whose sum is σ = 71527634640. Its totient is φ = 5984010240.

The previous prime is 22440040309. The next prime is 22440040351. The reversal of 22440040320 is 2304004422.

It is a tau number, because it is divible by the number of its divisors (64).

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, 5841841 + ... + 5845680.

Almost surely, 2^22440040320 is an apocalyptic number.

22440040320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440040320 is an abundant number, since it is smaller than the sum of its proper divisors (49087594320).

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

22440040320 is a wasteful number, since it uses less digits than its factorization.

22440040320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11687543 (or 11687531 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 22440040320 its reverse (2304004422), we get a palindrome (24744044742).

The spelling of 22440040320 in words is "twenty-two billion, four hundred forty million, forty thousand, three hundred twenty".