22423443040 has 24 divisors (see below), whose sum is σ = 52975384560. Its totient is φ = 8969377152.

The previous prime is 22423443013. The next prime is 22423443041. The reversal of 22423443040 is 4034432422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22423443041) 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, 70073100 + ... + 70073419.

It is an arithmetic number, because the mean of its divisors is an integer number (2207307690).

Almost surely, 2^22423443040 is an apocalyptic number.

22423443040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22423443040 is an abundant number, since it is smaller than the sum of its proper divisors (30551941520).

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

22423443040 is a wasteful number, since it uses less digits than its factorization.

22423443040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140146534 (or 140146526 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 22423443040 its reverse (4034432422), we get a palindrome (26457875462).

The spelling of 22423443040 in words is "twenty-two billion, four hundred twenty-three million, four hundred forty-three thousand, forty".