12622218 has 32 divisors (see below), whose sum is σ = 28961664. Its totient is φ = 3592512.

The previous prime is 12622201. The next prime is 12622223. The reversal of 12622218 is 81222621.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16296 + ... + 17052.

It is an arithmetic number, because the mean of its divisors is an integer number (905052).

Almost surely, 2^12622218 is an apocalyptic number.

12622218 is an abundant number, since it is smaller than the sum of its proper divisors (16339446).

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

12622218 is a wasteful number, since it uses less digits than its factorization.

12622218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its digits is 768, while the sum is 24.

The square root of 12622218 is about 3552.7760976453. The cubic root of 12622218 is about 232.8333707668.

Adding to 12622218 its reverse (81222621), we get a palindrome (93844839).

The spelling of 12622218 in words is "twelve million, six hundred twenty-two thousand, two hundred eighteen".