13216218 has 8 divisors (see below), whose sum is σ = 26432448. Its totient is φ = 4405404.

The previous prime is 13216201. The next prime is 13216223. The reversal of 13216218 is 81261231.

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

13216218 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101346 + ... + 1101357.

It is an arithmetic number, because the mean of its divisors is an integer number (3304056).

Almost surely, 2^13216218 is an apocalyptic number.

13216218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13216218 is a wasteful number, since it uses less digits than its factorization.

13216218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202708.

The product of its digits is 576, while the sum is 24.

The square root of 13216218 is about 3635.4116685735. The cubic root of 13216218 is about 236.4298996484.

Adding to 13216218 its reverse (81261231), we get a palindrome (94477449).

The spelling of 13216218 in words is "thirteen million, two hundred sixteen thousand, two hundred eighteen".