12686422 has 16 divisors (see below), whose sum is σ = 22056192. Its totient is φ = 5360040.

The previous prime is 12686417. The next prime is 12686423. The reversal of 12686422 is 22468621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5388 + ... + 7375.

It is an arithmetic number, because the mean of its divisors is an integer number (1378512).

Almost surely, 2^12686422 is an apocalyptic number.

12686422 is a deficient number, since it is larger than the sum of its proper divisors (9369770).

12686422 is a wasteful number, since it uses less digits than its factorization.

12686422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12843.

The product of its digits is 9216, while the sum is 31.

The square root of 12686422 is about 3561.8003874445. The cubic root of 12686422 is about 233.2274789693.

The spelling of 12686422 in words is "twelve million, six hundred eighty-six thousand, four hundred twenty-two".