13222318 has 16 divisors (see below), whose sum is σ = 20616480. Its totient is φ = 6352416.

The previous prime is 13222303. The next prime is 13222327. The reversal of 13222318 is 81322231.

13222318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15655 + ... + 16477.

It is an arithmetic number, because the mean of its divisors is an integer number (1288530).

Almost surely, 2^13222318 is an apocalyptic number.

13222318 is a deficient number, since it is larger than the sum of its proper divisors (7394162).

13222318 is a wasteful number, since it uses less digits than its factorization.

13222318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131.

The product of its digits is 576, while the sum is 22.

The square root of 13222318 is about 3636.2505414231. The cubic root of 13222318 is about 236.4662691190.

Adding to 13222318 its reverse (81322231), we get a palindrome (94544549).

The spelling of 13222318 in words is "thirteen million, two hundred twenty-two thousand, three hundred eighteen".