12685312 has 52 divisors (see below), whose sum is σ = 26866480. Its totient is φ = 5971968.

The previous prime is 12685303. The next prime is 12685313. The reversal of 12685312 is 21358621.

It is not an unprimeable number, because it can be changed into a prime (12685313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77743 + ... + 77905.

Almost surely, 2^12685312 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 12685312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13433240).

12685312 is an abundant number, since it is smaller than the sum of its proper divisors (14181168).

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

12685312 is an equidigital number, since it uses as much as digits as its factorization.

12685312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 184 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 12685312 is about 3561.6445639620. The cubic root of 12685312 is about 233.2206766823.

The spelling of 12685312 in words is "twelve million, six hundred eighty-five thousand, three hundred twelve".