4005256 has 16 divisors (see below), whose sum is σ = 7585740. Its totient is φ = 1982400.

The previous prime is 4005241. The next prime is 4005271. The reversal of 4005256 is 6525004.

4005256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4005241) and next prime (4005271).

It can be written as a sum of positive squares in 2 ways, for example, as 3132900 + 872356 = 1770^2 + 934^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671 + ... + 3286.

Almost surely, 2^4005256 is an apocalyptic number.

It is an amenable number.

4005256 is a deficient number, since it is larger than the sum of its proper divisors (3580484).

4005256 is a wasteful number, since it uses less digits than its factorization.

4005256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064 (or 5060 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 4005256 is about 2001.3135686344. The cubic root of 4005256 is about 158.8096029318.

The spelling of 4005256 in words is "four million, five thousand, two hundred fifty-six".