2005436 has 12 divisors (see below), whose sum is σ = 3567480. Its totient is φ = 986160.

The previous prime is 2005429. The next prime is 2005441. The reversal of 2005436 is 6345002.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3866 + ... + 4353.

It is an arithmetic number, because the mean of its divisors is an integer number (297290).

2^2005436 is an apocalyptic number.

It is an amenable number.

2005436 is a deficient number, since it is larger than the sum of its proper divisors (1562044).

2005436 is a wasteful number, since it uses less digits than its factorization.

2005436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284 (or 8282 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 2005436 is about 1416.1341744340. The cubic root of 2005436 is about 126.1061505736.

The spelling of 2005436 in words is "two million, five thousand, four hundred thirty-six".