13226218 has 4 divisors (see below), whose sum is σ = 19839330. Its totient is φ = 6613108.

The previous prime is 13226197. The next prime is 13226237. The reversal of 13226218 is 81262231.

13226218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9566649 + 3659569 = 3093^2 + 1913^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13226192 and 13226201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306553 + ... + 3306556.

Almost surely, 2^13226218 is an apocalyptic number.

13226218 is a deficient number, since it is larger than the sum of its proper divisors (6613112).

13226218 is an equidigital number, since it uses as much as digits as its factorization.

13226218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613111.

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

The square root of 13226218 is about 3636.7867685637. The cubic root of 13226218 is about 236.4895158697.

Adding to 13226218 its reverse (81262231), we get a palindrome (94488449).

The spelling of 13226218 in words is "thirteen million, two hundred twenty-six thousand, two hundred eighteen".