2644256 has 12 divisors (see below), whose sum is σ = 5205942. Its totient is φ = 1322112.

The previous prime is 2644247. The next prime is 2644261. The reversal of 2644256 is 6524462.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 512656 = 1460^2 + 716^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41285 + ... + 41348.

2^2644256 is an apocalyptic number.

It is an amenable number.

2644256 is a deficient number, since it is larger than the sum of its proper divisors (2561686).

2644256 is an equidigital number, since it uses as much as digits as its factorization.

2644256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82643 (or 82635 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 2644256 is about 1626.1168469701. The cubic root of 2644256 is about 138.2826943246.

The spelling of 2644256 in words is "two million, six hundred forty-four thousand, two hundred fifty-six".