2256256 has 16 divisors (see below), whose sum is σ = 4495140. Its totient is φ = 1128064.

The previous prime is 2256251. The next prime is 2256259. The reversal of 2256256 is 6526522.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×2256256² = 10181382275072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8686 + ... + 8941.

2^2256256 is an apocalyptic number.

It is an amenable number.

2256256 is a deficient number, since it is larger than the sum of its proper divisors (2238884).

2256256 is an equidigital number, since it uses as much as digits as its factorization.

2256256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17641 (or 17629 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 2256256 is about 1502.0838858066. The cubic root of 2256256 is about 131.1584044225.

The spelling of 2256256 in words is "two million, two hundred fifty-six thousand, two hundred fifty-six".