12643246 has 64 divisors (see below), whose sum is σ = 25920000. Its totient is φ = 4475520.

The previous prime is 12643201. The next prime is 12643249. The reversal of 12643246 is 64234621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84780 + ... + 84928.

It is an arithmetic number, because the mean of its divisors is an integer number (405000).

Almost surely, 2^12643246 is an apocalyptic number.

12643246 is an abundant number, since it is smaller than the sum of its proper divisors (13276754).

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

12643246 is a wasteful number, since it uses less digits than its factorization.

12643246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its digits is 6912, while the sum is 28.

The square root of 12643246 is about 3555.7342420378. The cubic root of 12643246 is about 232.9625953820.

Adding to 12643246 its reverse (64234621), we get a palindrome (76877867).

The spelling of 12643246 in words is "twelve million, six hundred forty-three thousand, two hundred forty-six".