12381366 has 8 divisors (see below), whose sum is σ = 24762744. Its totient is φ = 4127120.

The previous prime is 12381361. The next prime is 12381367. The reversal of 12381366 is 66318321.

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

12381366 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031775 + ... + 1031786.

It is an arithmetic number, because the mean of its divisors is an integer number (3095343).

Almost surely, 2^12381366 is an apocalyptic number.

12381366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12381366 is a wasteful number, since it uses less digits than its factorization.

12381366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063566.

The product of its digits is 5184, while the sum is 30.

The square root of 12381366 is about 3518.7165273719. The cubic root of 12381366 is about 231.3429063264.

Adding to 12381366 its reverse (66318321), we get a palindrome (78699687).

The spelling of 12381366 in words is "twelve million, three hundred eighty-one thousand, three hundred sixty-six".