12439768 has 48 divisors (see below), whose sum is σ = 26142480. Its totient is φ = 5544000.

The previous prime is 12439751. The next prime is 12439783. The reversal of 12439768 is 86793421.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12439768.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68638 + ... + 68818.

It is an arithmetic number, because the mean of its divisors is an integer number (544635).

Almost surely, 2^12439768 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 12439768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13071240).

12439768 is an abundant number, since it is smaller than the sum of its proper divisors (13702712).

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

12439768 is a wasteful number, since it uses less digits than its factorization.

12439768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 265 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 12439768 is about 3527.0055287737. The cubic root of 12439768 is about 231.7060784411.

It can be divided in two parts, 1243 and 9768, that added together give a palindrome (11011).

The spelling of 12439768 in words is "twelve million, four hundred thirty-nine thousand, seven hundred sixty-eight".