12813226 has 8 divisors (see below), whose sum is σ = 19666944. Its totient is φ = 6257580.

The previous prime is 12813217. The next prime is 12813253. The reversal of 12813226 is 62231821.

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 12813226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74410 + ... + 74581.

It is an arithmetic number, because the mean of its divisors is an integer number (2458368).

Almost surely, 2^12813226 is an apocalyptic number.

12813226 is a deficient number, since it is larger than the sum of its proper divisors (6853718).

12813226 is a wasteful number, since it uses less digits than its factorization.

12813226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149036.

The product of its digits is 1152, while the sum is 25.

The square root of 12813226 is about 3579.5566764615. The cubic root of 12813226 is about 234.0019601949.

The spelling of 12813226 in words is "twelve million, eight hundred thirteen thousand, two hundred twenty-six".