12687712 has 48 divisors (see below), whose sum is σ = 26862192. Its totient is φ = 5877760.

The previous prime is 12687683. The next prime is 12687733. The reversal of 12687712 is 21778621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45012 + ... + 45292.

It is an arithmetic number, because the mean of its divisors is an integer number (559629).

Almost surely, 2^12687712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12687712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13431096).

12687712 is an abundant number, since it is smaller than the sum of its proper divisors (14174480).

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

12687712 is a wasteful number, since it uses less digits than its factorization.

12687712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 383 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 12687712 is about 3561.9814710355. The cubic root of 12687712 is about 233.2353838315.

Subtracting 12687712 from its reverse (21778621), we obtain a palindrome (9090909).

The spelling of 12687712 in words is "twelve million, six hundred eighty-seven thousand, seven hundred twelve".