2031444 has 36 divisors (see below), whose sum is σ = 5212116. Its totient is φ = 667008.

The previous prime is 2031443. The next prime is 2031457. The reversal of 2031444 is 4441302.

It can be written as a sum of positive squares in 2 ways, for example, as 562500 + 1468944 = 750^2 + 1212^2 .

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2242 + ... + 3014.

It is an arithmetic number, because the mean of its divisors is an integer number (144781).

2^2031444 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 2031444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2606058).

2031444 is an abundant number, since it is smaller than the sum of its proper divisors (3180672).

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

2031444 is a wasteful number, since it uses less digits than its factorization.

2031444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2031444 is about 1425.2873394512. The cubic root of 2031444 is about 126.6489572040.

Adding to 2031444 its reverse (4441302), we get a palindrome (6472746).

The spelling of 2031444 in words is "two million, thirty-one thousand, four hundred forty-four".