2805056 has 28 divisors (see below), whose sum is σ = 5707380. Its totient is φ = 1367040.

The previous prime is 2805043. The next prime is 2805071. The reversal of 2805056 is 6505082.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 2190400 = 784^2 + 1480^2 .

It is a congruent number.

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, 2090 + ... + 3158.

It is an arithmetic number, because the mean of its divisors is an integer number (203835).

2^2805056 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 2805056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2853690).

2805056 is an abundant number, since it is smaller than the sum of its proper divisors (2902324).

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

2805056 is a wasteful number, since it uses less digits than its factorization.

2805056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2805056 is about 1674.8301406411. The cubic root of 2805056 is about 141.0307596825.

Adding to 2805056 its sum of digits (26), we get a palindrome (2805082).

The spelling of 2805056 in words is "two million, eight hundred five thousand, fifty-six".