4218822 has 36 divisors (see below), whose sum is σ = 9722076. Its totient is φ = 1321920.

The previous prime is 4218803. The next prime is 4218829. The reversal of 4218822 is 2288124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4218829) 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 17 ways as a sum of consecutive naturals, for example, 4797 + ... + 5607.

Almost surely, 2^4218822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4218822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4861038).

4218822 is an abundant number, since it is smaller than the sum of its proper divisors (5503254).

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

4218822 is a wasteful number, since it uses less digits than its factorization.

4218822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 833 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 4218822 is about 2053.9771176914. The cubic root of 4218822 is about 161.5835209726.

The spelling of 4218822 in words is "four million, two hundred eighteen thousand, eight hundred twenty-two".