22423304240 has 20 divisors (see below), whose sum is σ = 52134182544. Its totient is φ = 8969321664.

The previous prime is 22423304209. The next prime is 22423304243. The reversal of 22423304240 is 4240332422.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (22423304243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140145572 + ... + 140145731.

Almost surely, 2^22423304240 is an apocalyptic number.

22423304240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22423304240 is an abundant number, since it is smaller than the sum of its proper divisors (29710878304).

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

22423304240 is a wasteful number, since it uses less digits than its factorization.

22423304240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280291316 (or 280291310 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 22423304240 its reverse (4240332422), we get a palindrome (26663636662).

The spelling of 22423304240 in words is "twenty-two billion, four hundred twenty-three million, three hundred four thousand, two hundred forty".