12443312 has 40 divisors (see below), whose sum is σ = 27727392. Its totient is φ = 5299200.

The previous prime is 12443311. The next prime is 12443317. The reversal of 12443312 is 21334421.

It is not an unprimeable number, because it can be changed into a prime (12443311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26762 + ... + 27222.

Almost surely, 2^12443312 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 12443312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13863696).

12443312 is an abundant number, since it is smaller than the sum of its proper divisors (15284080).

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

12443312 is a wasteful number, since it uses less digits than its factorization.

12443312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 711 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 12443312 is about 3527.5079021882. The cubic root of 12443312 is about 231.7280801475.

Adding to 12443312 its reverse (21334421), we get a palindrome (33777733).

The spelling of 12443312 in words is "twelve million, four hundred forty-three thousand, three hundred twelve".