23144022440 has 256 divisors, whose sum is σ = 68243281920. Its totient is φ = 6854077440.

The previous prime is 23144022409. The next prime is 23144022469. The reversal of 23144022440 is 4422044132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4897919 + ... + 4902641.

It is an arithmetic number, because the mean of its divisors is an integer number (266575320).

Almost surely, 2^23144022440 is an apocalyptic number.

23144022440 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 23144022440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34121640960).

23144022440 is an abundant number, since it is smaller than the sum of its proper divisors (45099259480).

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

23144022440 is a wasteful number, since it uses less digits than its factorization.

23144022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832 (or 4828 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 23144022440 its reverse (4422044132), we get a palindrome (27566066572).

The spelling of 23144022440 in words is "twenty-three billion, one hundred forty-four million, twenty-two thousand, four hundred forty".