12643282 has 8 divisors (see below), whose sum is σ = 19368576. Its totient is φ = 6187092.

The previous prime is 12643273. The next prime is 12643283. The reversal of 12643282 is 28234621.

12643282 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12643282.

It is not an unprimeable number, because it can be changed into a prime (12643283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67158 + ... + 67345.

It is an arithmetic number, because the mean of its divisors is an integer number (2421072).

Almost surely, 2^12643282 is an apocalyptic number.

12643282 is a deficient number, since it is larger than the sum of its proper divisors (6725294).

12643282 is a wasteful number, since it uses less digits than its factorization.

12643282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134552.

The product of its digits is 4608, while the sum is 28.

The square root of 12643282 is about 3555.7393042798. The cubic root of 12643282 is about 232.9628164920.

The spelling of 12643282 in words is "twelve million, six hundred forty-three thousand, two hundred eighty-two".