12256636 has 24 divisors (see below), whose sum is σ = 24748416. Its totient is φ = 5202480.

The previous prime is 12256633. The next prime is 12256649. The reversal of 12256636 is 63665221.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12256598 and 12256607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256633) 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 7 ways as a sum of consecutive naturals, for example, 951 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (1031184).

Almost surely, 2^12256636 is an apocalyptic number.

It is an amenable number.

12256636 is an abundant number, since it is smaller than the sum of its proper divisors (12491780).

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

12256636 is a wasteful number, since it uses less digits than its factorization.

12256636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209 (or 4207 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 12256636 is about 3500.9478716485. The cubic root of 12256636 is about 230.5634327422.

The spelling of 12256636 in words is "twelve million, two hundred fifty-six thousand, six hundred thirty-six".