2056256 has 42 divisors (see below), whose sum is σ = 4354830. Its totient is φ = 963072.

The previous prime is 2056253. The next prime is 2056277. The reversal of 2056256 is 6526502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1478656 + 577600 = 1216^2 + 760^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2056253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23060 + ... + 23148.

2^2056256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2056256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177415).

2056256 is an abundant number, since it is smaller than the sum of its proper divisors (2298574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2056256 is an equidigital number, since it uses as much as digits as its factorization.

2056256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2056256 is about 1433.9651320726. The cubic root of 2056256 is about 127.1625009777.

The spelling of 2056256 in words is "two million, fifty-six thousand, two hundred fifty-six".