2656256 has 24 divisors (see below), whose sum is σ = 5315310. Its totient is φ = 1327104.

The previous prime is 2656243. The next prime is 2656261. The reversal of 2656256 is 6526562.

It can be written as a sum of positive squares in only one way, i.e., 1401856 + 1254400 = 1184^2 + 1120^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400 + ... + 2696.

2^2656256 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 2656256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657655).

2656256 is an abundant number, since it is smaller than the sum of its proper divisors (2659054).

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

2656256 is an equidigital number, since it uses as much as digits as its factorization.

2656256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1299 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 2656256 is about 1629.8024420156. The cubic root of 2656256 is about 138.4915606947.

The spelling of 2656256 in words is "two million, six hundred fifty-six thousand, two hundred fifty-six".