12686982 has 48 divisors (see below), whose sum is σ = 32208192. Its totient is φ = 3294480.

The previous prime is 12686977. The next prime is 12686987. The reversal of 12686982 is 28968621.

It is an interprime number because it is at equal distance from previous prime (12686977) and next prime (12686987).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1273 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (671004).

Almost surely, 2^12686982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12686982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16104096).

12686982 is an abundant number, since it is smaller than the sum of its proper divisors (19521210).

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

12686982 is a wasteful number, since it uses less digits than its factorization.

12686982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953 (or 3946 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 12686982 is about 3561.8789985063. The cubic root of 12686982 is about 233.2309106032.

The spelling of 12686982 in words is "twelve million, six hundred eighty-six thousand, nine hundred eighty-two".