12381346 has 8 divisors (see below), whose sum is σ = 18639900. Its totient is φ = 6168048.

The previous prime is 12381329. The next prime is 12381349. The reversal of 12381346 is 64318321.

It can be written as a sum of positive squares in 2 ways, for example, as 10791225 + 1590121 = 3285^2 + 1261^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12381349) 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 3 ways as a sum of consecutive naturals, for example, 10621 + ... + 11728.

Almost surely, 2^12381346 is an apocalyptic number.

12381346 is a deficient number, since it is larger than the sum of its proper divisors (6258554).

12381346 is a wasteful number, since it uses less digits than its factorization.

12381346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22628.

The product of its digits is 3456, while the sum is 28.

The square root of 12381346 is about 3518.7136854254. The cubic root of 12381346 is about 231.3427817612.

Adding to 12381346 its reverse (64318321), we get a palindrome (76699667).

The spelling of 12381346 in words is "twelve million, three hundred eighty-one thousand, three hundred forty-six".