22504144240 has 40 divisors (see below), whose sum is σ = 52331963040. Its totient is φ = 8999966976.

The previous prime is 22504144237. The next prime is 22504144241. The reversal of 22504144240 is 4244140522.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 22504144199 and 22504144208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22504144241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457146 + ... + 503974.

It is an arithmetic number, because the mean of its divisors is an integer number (1308299076).

Almost surely, 2^22504144240 is an apocalyptic number.

22504144240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22504144240 is an abundant number, since it is smaller than the sum of its proper divisors (29827818800).

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

22504144240 is a wasteful number, since it uses less digits than its factorization.

22504144240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52849 (or 52843 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 22504144240 its reverse (4244140522), we get a palindrome (26748284762).

The spelling of 22504144240 in words is "twenty-two billion, five hundred four million, one hundred forty-four thousand, two hundred forty".