4223220 has 48 divisors (see below), whose sum is σ = 12035520. Its totient is φ = 1106176.

The previous prime is 4223207. The next prime is 4223231. The reversal of 4223220 is 223224.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 4223220.

It is a congruent 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, 2944 + ... + 4136.

It is an arithmetic number, because the mean of its divisors is an integer number (250740).

Almost surely, 2^4223220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6017760).

4223220 is an abundant number, since it is smaller than the sum of its proper divisors (7812300).

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

4223220 is a wasteful number, since it uses less digits than its factorization.

4223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4223220 is about 2055.0474447078. The cubic root of 4223220 is about 161.6396501896.

Adding to 4223220 its reverse (223224), we get a palindrome (4446444).

The spelling of 4223220 in words is "four million, two hundred twenty-three thousand, two hundred twenty".