12381446 has 24 divisors (see below), whose sum is σ = 23333520. Its totient is φ = 4823280.

The previous prime is 12381443. The next prime is 12381451. The reversal of 12381446 is 64418321.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381443) by changing a digit.

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, 1961 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (972230).

Almost surely, 2^12381446 is an apocalyptic number.

12381446 is a deficient number, since it is larger than the sum of its proper divisors (10952074).

12381446 is a wasteful number, since it uses less digits than its factorization.

12381446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340 (or 7329 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 12381446 is about 3518.7278951348. The cubic root of 12381446 is about 231.3434045857.

Adding to 12381446 its reverse (64418321), we get a palindrome (76799767).

The spelling of 12381446 in words is "twelve million, three hundred eighty-one thousand, four hundred forty-six".