2005437 has 32 divisors (see below), whose sum is σ = 3283200. Its totient is φ = 1064448.

The previous prime is 2005429. The next prime is 2005441. The reversal of 2005437 is 7345002.

It is a happy number.

It is not a de Polignac number, because 2005437 - 2³ = 2005429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22489 + ... + 22577.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2^2005437 is an apocalyptic number.

It is an amenable number.

2005437 is a deficient number, since it is larger than the sum of its proper divisors (1277763).

2005437 is a wasteful number, since it uses less digits than its factorization.

2005437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 2005437 is about 1416.1345275079. The cubic root of 2005437 is about 126.1061715343.

It can be divided in two parts, 2005 and 437, that added together give a palindrome (2442).

The spelling of 2005437 in words is "two million, five thousand, four hundred thirty-seven".