2005838 has 16 divisors (see below), whose sum is σ = 3110400. Its totient is φ = 969696.

The previous prime is 2005831. The next prime is 2005841. The reversal of 2005838 is 8385002.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13388 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (194400).

2^2005838 is an apocalyptic number.

2005838 is a deficient number, since it is larger than the sum of its proper divisors (1104562).

2005838 is a wasteful number, since it uses less digits than its factorization.

2005838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2005838 is about 1416.2761030251. The cubic root of 2005838 is about 126.1145762203.

The spelling of 2005838 in words is "two million, five thousand, eight hundred thirty-eight".