2223444 has 48 divisors (see below), whose sum is σ = 5519360. Its totient is φ = 695520.

The previous prime is 2223443. The next prime is 2223449. The reversal of 2223444 is 4443222.

2223444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2223444² = 9887406442272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2223444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223443) 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 15 ways as a sum of consecutive naturals, for example, 15927 + ... + 16065.

2^2223444 is an apocalyptic number.

It is an amenable number.

2223444 is an abundant number, since it is smaller than the sum of its proper divisors (3295916).

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

2223444 is a wasteful number, since it uses less digits than its factorization.

2223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 218 counting only the distinct ones).

The product of its digits is 1536, while the sum is 21.

The square root of 2223444 is about 1491.1217254135. The cubic root of 2223444 is about 130.5194991488.

Adding to 2223444 its reverse (4443222), we get a palindrome (6666666).

It can be divided in two parts, 2 and 223444, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 2223444 in words is "two million, two hundred twenty-three thousand, four hundred forty-four".