2822656 has 40 divisors (see below), whose sum is σ = 5831100. Its totient is φ = 1363968.

The previous prime is 2822641. The next prime is 2822669. The reversal of 2822656 is 6562282.

It can be written as a sum of positive squares in 2 ways, for example, as 2822400 + 256 = 1680^2 + 16^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18870 + ... + 19018.

2^2822656 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 2822656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2915550).

2822656 is an abundant number, since it is smaller than the sum of its proper divisors (3008444).

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

2822656 is an equidigital number, since it uses as much as digits as its factorization.

2822656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 188 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 2822656 is about 1680.0761887486. The cubic root of 2822656 is about 141.3251053317.

It can be divided in two parts, 28226 and 56, that added together give a palindrome (28282).

The spelling of 2822656 in words is "two million, eight hundred twenty-two thousand, six hundred fifty-six".