12643412 has 12 divisors (see below), whose sum is σ = 22839936. Its totient is φ = 6117720.

The previous prime is 12643387. The next prime is 12643439. The reversal of 12643412 is 21434621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50858 + ... + 51105.

It is an arithmetic number, because the mean of its divisors is an integer number (1903328).

Almost surely, 2^12643412 is an apocalyptic number.

It is an amenable number.

12643412 is a deficient number, since it is larger than the sum of its proper divisors (10196524).

12643412 is a wasteful number, since it uses less digits than its factorization.

12643412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101998 (or 101996 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 12643412 is about 3555.7575845381. The cubic root of 12643412 is about 232.9636149414.

The spelling of 12643412 in words is "twelve million, six hundred forty-three thousand, four hundred twelve".