12440244232 has 64 divisors (see below), whose sum is σ = 26348676480. Its totient is φ = 5463355392.

The previous prime is 12440244203. The next prime is 12440244239. The reversal of 12440244232 is 23244204421.

It is a self number, because there is not a number n which added to its sum of digits gives 12440244232.

It is not an unprimeable number, because it can be changed into a prime (12440244239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448183 + ... + 475129.

It is an arithmetic number, because the mean of its divisors is an integer number (411698070).

Almost surely, 2^12440244232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12440244232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13174338240).

12440244232 is an abundant number, since it is smaller than the sum of its proper divisors (13908432248).

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

12440244232 is a wasteful number, since it uses less digits than its factorization.

12440244232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27182 (or 27178 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 12440244232 its reverse (23244204421), we get a palindrome (35684448653).

The spelling of 12440244232 in words is "twelve billion, four hundred forty million, two hundred forty-four thousand, two hundred thirty-two".