12318636 has 24 divisors (see below), whose sum is σ = 31356864. Its totient is φ = 3732880.

The previous prime is 12318623. The next prime is 12318689. The reversal of 12318636 is 63681321.

It is a super-3 number, since 3×12318636³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46530 + ... + 46793.

It is an arithmetic number, because the mean of its divisors is an integer number (1306536).

Almost surely, 2^12318636 is an apocalyptic number.

It is an amenable number.

12318636 is an abundant number, since it is smaller than the sum of its proper divisors (19038228).

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

12318636 is a wasteful number, since it uses less digits than its factorization.

12318636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93341 (or 93339 counting only the distinct ones).

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

The square root of 12318636 is about 3509.7914467957. The cubic root of 12318636 is about 230.9515462173.

Adding to 12318636 its reverse (63681321), we get a palindrome (75999957).

The spelling of 12318636 in words is "twelve million, three hundred eighteen thousand, six hundred thirty-six".