12438646 has 8 divisors (see below), whose sum is σ = 20354184. Its totient is φ = 5653920.

The previous prime is 12438637. The next prime is 12438659. The reversal of 12438646 is 64683421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282675 + ... + 282718.

It is an arithmetic number, because the mean of its divisors is an integer number (2544273).

Almost surely, 2^12438646 is an apocalyptic number.

12438646 is a deficient number, since it is larger than the sum of its proper divisors (7915538).

12438646 is a wasteful number, since it uses less digits than its factorization.

12438646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565406.

The product of its digits is 27648, while the sum is 34.

The square root of 12438646 is about 3526.8464667462. The cubic root of 12438646 is about 231.6991120186.

It can be divided in two parts, 1243 and 8646, that added together give a palindrome (9889).

The spelling of 12438646 in words is "twelve million, four hundred thirty-eight thousand, six hundred forty-six".