2865256 has 8 divisors (see below), whose sum is σ = 5372370. Its totient is φ = 1432624.

The previous prime is 2865241. The next prime is 2865259. The reversal of 2865256 is 6525682.

2865256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1932100 + 933156 = 1390^2 + 966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2865259) by changing a digit.

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 as a sum of consecutive naturals, namely, 179071 + ... + 179086.

2^2865256 is an apocalyptic number.

It is an amenable number.

2865256 is a deficient number, since it is larger than the sum of its proper divisors (2507114).

2865256 is a wasteful number, since it uses less digits than its factorization.

2865256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358163 (or 358159 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 2865256 is about 1692.7067082043. The cubic root of 2865256 is about 142.0325257768.

The spelling of 2865256 in words is "two million, eight hundred sixty-five thousand, two hundred fifty-six".