2143844 has 12 divisors (see below), whose sum is σ = 3772524. Its totient is φ = 1065984.

The previous prime is 2143837. The next prime is 2143847. The reversal of 2143844 is 4483412.

It can be written as a sum of positive squares in 2 ways, for example, as 422500 + 1721344 = 650^2 + 1312^2 .

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2143847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617 + ... + 2160.

It is an arithmetic number, because the mean of its divisors is an integer number (314377).

2^2143844 is an apocalyptic number.

It is an amenable number.

2143844 is a deficient number, since it is larger than the sum of its proper divisors (1628680).

2143844 is a wasteful number, since it uses less digits than its factorization.

2143844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 2972 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 2143844 is about 1464.1871465083. The cubic root of 2143844 is about 128.9429870451.

The spelling of 2143844 in words is "two million, one hundred forty-three thousand, eight hundred forty-four".