22232420440 has 64 divisors (see below), whose sum is σ = 50550984000. Its totient is φ = 8799321600.

The previous prime is 22232420363. The next prime is 22232420447. The reversal of 22232420440 is 4402423222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22232420447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3611365 + ... + 3617515.

It is an arithmetic number, because the mean of its divisors is an integer number (789859125).

Almost surely, 2^22232420440 is an apocalyptic number.

22232420440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22232420440 is an abundant number, since it is smaller than the sum of its proper divisors (28318563560).

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

22232420440 is a wasteful number, since it uses less digits than its factorization.

22232420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100 (or 7096 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 22232420440 its reverse (4402423222), we get a palindrome (26634843662).

The spelling of 22232420440 in words is "twenty-two billion, two hundred thirty-two million, four hundred twenty thousand, four hundred forty".