12866822 has 8 divisors (see below), whose sum is σ = 19324656. Its totient is φ = 6425272.

The previous prime is 12866803. The next prime is 12866827. The reversal of 12866822 is 22866821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866827) 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, 1853 + ... + 5400.

It is an arithmetic number, because the mean of its divisors is an integer number (2415582).

Almost surely, 2^12866822 is an apocalyptic number.

12866822 is a deficient number, since it is larger than the sum of its proper divisors (6457834).

12866822 is an equidigital number, since it uses as much as digits as its factorization.

12866822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8142.

The product of its digits is 18432, while the sum is 35.

The square root of 12866822 is about 3587.0352660658. The cubic root of 12866822 is about 234.3277725760.

Subtracting 12866822 from its reverse (22866821), we obtain a palindrome (9999999).

The spelling of 12866822 in words is "twelve million, eight hundred sixty-six thousand, eight hundred twenty-two".