22340023440 has 160 divisors (see below), whose sum is σ = 79964048640. Its totient is φ = 5053612032.

The previous prime is 22340023439. The next prime is 22340023463. The reversal of 22340023440 is 4432004322.

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 22340023440.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94416 + ... + 231504.

It is an arithmetic number, because the mean of its divisors is an integer number (499775304).

Almost surely, 2^22340023440 is an apocalyptic number.

22340023440 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 22340023440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39982024320).

22340023440 is an abundant number, since it is smaller than the sum of its proper divisors (57624025200).

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

22340023440 is a wasteful number, since it uses less digits than its factorization.

22340023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137209 (or 137203 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 22340023440 its reverse (4432004322), we get a palindrome (26772027762).

The spelling of 22340023440 in words is "twenty-two billion, three hundred forty million, twenty-three thousand, four hundred forty".