22340244340 has 24 divisors (see below), whose sum is σ = 49674191112. Its totient is φ = 8410444800.

The previous prime is 22340244317. The next prime is 22340244347. The reversal of 22340244340 is 4344204322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7875852516 + 14464391824 = 88746^2 + 120268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22340244299 and 22340244308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22340244347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32852961 + ... + 32853640.

It is an arithmetic number, because the mean of its divisors is an integer number (2069757963).

Almost surely, 2^22340244340 is an apocalyptic number.

22340244340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22340244340 is an abundant number, since it is smaller than the sum of its proper divisors (27333946772).

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

22340244340 is a wasteful number, since it uses less digits than its factorization.

22340244340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65706627 (or 65706625 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 22340244340 its reverse (4344204322), we get a palindrome (26684448662).

The spelling of 22340244340 in words is "twenty-two billion, three hundred forty million, two hundred forty-four thousand, three hundred forty".