13822218 has 64 divisors (see below), whose sum is σ = 33177600. Its totient is φ = 4253040.

The previous prime is 13822217. The next prime is 13822223. The reversal of 13822218 is 81222831.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13822191 and 13822200.

It is not an unprimeable number, because it can be changed into a prime (13822217) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 38323 + ... + 38681.

It is an arithmetic number, because the mean of its divisors is an integer number (518400).

Almost surely, 2^13822218 is an apocalyptic number.

13822218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13822218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16588800).

13822218 is an abundant number, since it is smaller than the sum of its proper divisors (19355382).

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

13822218 is a wasteful number, since it uses less digits than its factorization.

13822218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 418 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 13822218 is about 3717.8243637913. The cubic root of 13822218 is about 239.9896870569.

It can be divided in two parts, 1382 and 2218, that added together give a square (3600 = 60²).

The spelling of 13822218 in words is "thirteen million, eight hundred twenty-two thousand, two hundred eighteen".