12865436 has 6 divisors (see below), whose sum is σ = 22514520. Its totient is φ = 6432716.

The previous prime is 12865429. The next prime is 12865439. The reversal of 12865436 is 63456821.

12865436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12865396 and 12865405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12865439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608176 + ... + 1608183.

It is an arithmetic number, because the mean of its divisors is an integer number (3752420).

Almost surely, 2^12865436 is an apocalyptic number.

It is an amenable number.

12865436 is a deficient number, since it is larger than the sum of its proper divisors (9649084).

12865436 is a wasteful number, since it uses less digits than its factorization.

12865436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216363 (or 3216361 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 12865436 is about 3586.8420651041. The cubic root of 12865436 is about 234.3193584300.

The spelling of 12865436 in words is "twelve million, eight hundred sixty-five thousand, four hundred thirty-six".