2213444 has 24 divisors (see below), whose sum is σ = 4021920. Its totient is φ = 1065344.

The previous prime is 2213441. The next prime is 2213447. The reversal of 2213444 is 4443122.

It is an interprime number because it is at equal distance from previous prime (2213441) and next prime (2213447).

It is a super-2 number, since 2×2213444² = 9798668682272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2213441) 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, 19532 + ... + 19644.

It is an arithmetic number, because the mean of its divisors is an integer number (167580).

2^2213444 is an apocalyptic number.

It is an amenable number.

2213444 is a deficient number, since it is larger than the sum of its proper divisors (1808476).

2213444 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 2213444 = (4143242)₉.

2213444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 257 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 2213444 is about 1487.7647663525. The cubic root of 2213444 is about 130.3235333990.

Adding to 2213444 its reverse (4443122), we get a palindrome (6656566).

The spelling of 2213444 in words is "two million, two hundred thirteen thousand, four hundred forty-four".