2005736 has 16 divisors (see below), whose sum is σ = 3776100. Its totient is φ = 998784.

The previous prime is 2005723. The next prime is 2005739. The reversal of 2005736 is 6375002.

It can be written as a sum of positive squares in 2 ways, for example, as 1976836 + 28900 = 1406^2 + 170^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005739) 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, 2966 + ... + 3578.

2^2005736 is an apocalyptic number.

2005736 is the 818-th octagonal number.

It is an amenable number.

2005736 is a deficient number, since it is larger than the sum of its proper divisors (1770364).

2005736 is a wasteful number, since it uses less digits than its factorization.

2005736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 2005736 is about 1416.2400926397. The cubic root of 2005736 is about 126.1124384763.

The spelling of 2005736 in words is "two million, five thousand, seven hundred thirty-six".