12440022 has 96 divisors (see below), whose sum is σ = 32503680. Its totient is φ = 3144960.

The previous prime is 12440017. The next prime is 12440027. The reversal of 12440022 is 22004421.

It is an interprime number because it is at equal distance from previous prime (12440017) and next prime (12440027).

It is a junction number, because it is equal to n+sod(n) for n = 12439983 and 12440010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94897 + ... + 95027.

It is an arithmetic number, because the mean of its divisors is an integer number (338580).

Almost surely, 2^12440022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12440022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16251840).

12440022 is an abundant number, since it is smaller than the sum of its proper divisors (20063658).

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

12440022 is a wasteful number, since it uses less digits than its factorization.

12440022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 12440022 is about 3527.0415364722. The cubic root of 12440022 is about 231.7076554518.

Adding to 12440022 its reverse (22004421), we get a palindrome (34444443).

The spelling of 12440022 in words is "twelve million, four hundred forty thousand, twenty-two".