4022220 has 48 divisors (see below), whose sum is σ = 11531520. Its totient is φ = 1046976.

The previous prime is 4022203. The next prime is 4022257. The reversal of 4022220 is 222204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 4022196 and 4022205.

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, 1801 + ... + 3359.

It is an arithmetic number, because the mean of its divisors is an integer number (240240).

Almost surely, 2^4022220 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 4022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5765760).

4022220 is an abundant number, since it is smaller than the sum of its proper divisors (7509300).

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

4022220 is a wasteful number, since it uses less digits than its factorization.

4022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 4022220 is about 2005.5473068467. The cubic root of 4022220 is about 159.0334963644.

Adding to 4022220 its reverse (222204), we get a palindrome (4244424).

The spelling of 4022220 in words is "four million, twenty-two thousand, two hundred twenty".