12366738 has 12 divisors (see below), whose sum is σ = 26794638. Its totient is φ = 4122240.

The previous prime is 12366721. The next prime is 12366763. The reversal of 12366738 is 83766321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7969329 + 4397409 = 2823^2 + 2097^2 .

It is a Curzon 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 5 ways as a sum of consecutive naturals, for example, 343503 + ... + 343538.

Almost surely, 2^12366738 is an apocalyptic number.

12366738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12366738 is an abundant number, since it is smaller than the sum of its proper divisors (14427900).

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

12366738 is a wasteful number, since it uses less digits than its factorization.

12366738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687049 (or 687046 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 12366738 is about 3516.6373142535. The cubic root of 12366738 is about 231.2517635122.

The spelling of 12366738 in words is "twelve million, three hundred sixty-six thousand, seven hundred thirty-eight".