2005844 has 12 divisors (see below), whose sum is σ = 3605364. Its totient is φ = 975744.

The previous prime is 2005841. The next prime is 2005859. The reversal of 2005844 is 4485002.

2005844 = T₈₅ + T₈₆ + ... + T₂₃₂.

It can be written as a sum of positive squares in 2 ways, for example, as 1690000 + 315844 = 1300^2 + 562^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005841) 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, 6629 + ... + 6924.

It is an arithmetic number, because the mean of its divisors is an integer number (300447).

2^2005844 is an apocalyptic number.

It is an amenable number.

2005844 is a deficient number, since it is larger than the sum of its proper divisors (1599520).

2005844 is a wasteful number, since it uses less digits than its factorization.

2005844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13594 (or 13592 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2005844 is about 1416.2782212546. The cubic root of 2005844 is about 126.1147019677.

It can be divided in two parts, 20058 and 44, that added together give a palindrome (20102).

The spelling of 2005844 in words is "two million, five thousand, eight hundred forty-four".