2220344 has 32 divisors (see below), whose sum is σ = 4915200. Its totient is φ = 920160.

The previous prime is 2220331. The next prime is 2220349. The reversal of 2220344 is 4430222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097 + ... + 2375.

It is an arithmetic number, because the mean of its divisors is an integer number (153600).

2^2220344 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 2220344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2457600).

2220344 is an abundant number, since it is smaller than the sum of its proper divisors (2694856).

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

2220344 is a wasteful number, since it uses less digits than its factorization.

2220344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2220344 is about 1490.0818769450. The cubic root of 2220344 is about 130.4588127192.

Adding to 2220344 its reverse (4430222), we get a palindrome (6650566).

The spelling of 2220344 in words is "two million, two hundred twenty thousand, three hundred forty-four".