22801994440 has 32 divisors (see below), whose sum is σ = 52691098680. Its totient is φ = 8874289152.

The previous prime is 22801994387. The next prime is 22801994441. The reversal of 22801994440 is 4449910822.

It can be written as a sum of positive squares in 4 ways, for example, as 21419493316 + 1382501124 = 146354^2 + 37182^2 .

It is not an unprimeable number, because it can be changed into a prime (22801994441) by changing a digit.

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, 7701897 + ... + 7704856.

Almost surely, 2^22801994440 is an apocalyptic number.

22801994440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22801994440 is an abundant number, since it is smaller than the sum of its proper divisors (29889104240).

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

22801994440 is a wasteful number, since it uses less digits than its factorization.

22801994440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15406801 (or 15406797 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 22801994440 in words is "twenty-two billion, eight hundred one million, nine hundred ninety-four thousand, four hundred forty".