22042004240 has 20 divisors (see below), whose sum is σ = 51247660044. Its totient is φ = 8816801664.

The previous prime is 22042004233. The next prime is 22042004251. The reversal of 22042004240 is 4240024022.

It can be written as a sum of positive squares in 2 ways, for example, as 9454061824 + 12587942416 = 97232^2 + 112196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137762447 + ... + 137762606.

Almost surely, 2^22042004240 is an apocalyptic number.

22042004240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22042004240 is an abundant number, since it is smaller than the sum of its proper divisors (29205655804).

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

22042004240 is a wasteful number, since it uses less digits than its factorization.

22042004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275525066 (or 275525060 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22042004240 its reverse (4240024022), we get a palindrome (26282028262).

The spelling of 22042004240 in words is "twenty-two billion, forty-two million, four thousand, two hundred forty".