22004424340 has 72 divisors (see below), whose sum is σ = 48089857536. Its totient is φ = 8448470400.

The previous prime is 22004424311. The next prime is 22004424353. The reversal of 22004424340 is 4342440022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47731710 + ... + 47732170.

It is an arithmetic number, because the mean of its divisors is an integer number (667914688).

Almost surely, 2^22004424340 is an apocalyptic number.

22004424340 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 22004424340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24044928768).

22004424340 is an abundant number, since it is smaller than the sum of its proper divisors (26085433196).

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

22004424340 is a wasteful number, since it uses less digits than its factorization.

22004424340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 666 counting only the distinct ones).

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

Adding to 22004424340 its reverse (4342440022), we get a palindrome (26346864362).

The spelling of 22004424340 in words is "twenty-two billion, four million, four hundred twenty-four thousand, three hundred forty".