22940318940 has 384 divisors, whose sum is σ = 83516203008. Its totient is φ = 4566481920.

The previous prime is 22940318911. The next prime is 22940318941. The reversal of 22940318940 is 4981304922.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 22940318892 and 22940318901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22940318941) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11451979 + ... + 11453981.

It is an arithmetic number, because the mean of its divisors is an integer number (217490112).

Almost surely, 2^22940318940 is an apocalyptic number.

22940318940 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 22940318940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41758101504).

22940318940 is an abundant number, since it is smaller than the sum of its proper divisors (60575884068).

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

22940318940 is a wasteful number, since it uses less digits than its factorization.

22940318940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 22940318940 in words is "twenty-two billion, nine hundred forty million, three hundred eighteen thousand, nine hundred forty".