2211444 has 36 divisors (see below), whose sum is σ = 5713344. Its totient is φ = 720912.

The previous prime is 2211439. The next prime is 2211481. The reversal of 2211444 is 4441122.

2211444 is a `hidden beast` number, since 221 + 1 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1039 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (158704).

2^2211444 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 2211444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2856672).

2211444 is an abundant number, since it is smaller than the sum of its proper divisors (3501900).

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

2211444 is a wasteful number, since it uses less digits than its factorization.

2211444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364 (or 1359 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 2211444 is about 1487.0924651816. The cubic root of 2211444 is about 130.2842694570.

Adding to 2211444 its reverse (4441122), we get a palindrome (6652566).

The spelling of 2211444 in words is "two million, two hundred eleven thousand, four hundred forty-four".