12646312 has 24 divisors (see below), whose sum is σ = 27584010. Its totient is φ = 5419680.

The previous prime is 12646261. The next prime is 12646313. The reversal of 12646312 is 21364621.

12646312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12348196 + 298116 = 3514^2 + 546^2 .

It is not an unprimeable number, because it can be changed into a prime (12646313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15739 + ... + 16522.

Almost surely, 2^12646312 is an apocalyptic number.

It is an amenable number.

12646312 is an abundant number, since it is smaller than the sum of its proper divisors (14937698).

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

12646312 is a wasteful number, since it uses less digits than its factorization.

12646312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32281 (or 32270 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 12646312 is about 3556.1653504864. The cubic root of 12646312 is about 232.9814250820.

The spelling of 12646312 in words is "twelve million, six hundred forty-six thousand, three hundred twelve".