22412203440 has 160 divisors (see below), whose sum is σ = 76043632896. Its totient is φ = 5415367680.

The previous prime is 22412203423. The next prime is 22412203447. The reversal of 22412203440 is 4430221422.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22412203440.

It is not an unprimeable number, because it can be changed into a prime (22412203447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 796654 + ... + 824306.

Almost surely, 2^22412203440 is an apocalyptic number.

22412203440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22412203440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38021816448).

22412203440 is an abundant number, since it is smaller than the sum of its proper divisors (53631429456).

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

22412203440 is a wasteful number, since it uses less digits than its factorization.

22412203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27987 (or 27981 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22412203440 its reverse (4430221422), we get a palindrome (26842424862).

The spelling of 22412203440 in words is "twenty-two billion, four hundred twelve million, two hundred three thousand, four hundred forty".