12687982 has 8 divisors (see below), whose sum is σ = 19129176. Its totient is φ = 6311592.

The previous prime is 12687977. The next prime is 12687989. The reversal of 12687982 is 28978621.

12687982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12687989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15708 + ... + 16495.

It is an arithmetic number, because the mean of its divisors is an integer number (2391147).

Almost surely, 2^12687982 is an apocalyptic number.

12687982 is a deficient number, since it is larger than the sum of its proper divisors (6441194).

12687982 is a wasteful number, since it uses less digits than its factorization.

12687982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32402.

The product of its digits is 96768, while the sum is 43.

The square root of 12687982 is about 3562.0193710871. The cubic root of 12687982 is about 233.2370382697.

The spelling of 12687982 in words is "twelve million, six hundred eighty-seven thousand, nine hundred eighty-two".