22243040240 has 20 divisors (see below), whose sum is σ = 51715068744. Its totient is φ = 8897216064.

The previous prime is 22243040233. The next prime is 22243040243. The reversal of 22243040240 is 4204034222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22243040243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139018922 + ... + 139019081.

Almost surely, 2^22243040240 is an apocalyptic number.

22243040240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22243040240 is an abundant number, since it is smaller than the sum of its proper divisors (29472028504).

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

22243040240 is a wasteful number, since it uses less digits than its factorization.

22243040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278038016 (or 278038010 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 22243040240 its reverse (4204034222), we get a palindrome (26447074462).

The spelling of 22243040240 in words is "twenty-two billion, two hundred forty-three million, forty thousand, two hundred forty".