2826805 has 4 divisors (see below), whose sum is σ = 3392172. Its totient is φ = 2261440.

The previous prime is 2826793. The next prime is 2826821. The reversal of 2826805 is 5086282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5086282 = 2 ⋅2543141.

It can be written as a sum of positive squares in 2 ways, for example, as 1483524 + 1343281 = 1218^2 + 1159^2 .

It is not a de Polignac number, because 2826805 - 2⁵ = 2826773 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2¹⁴ + 8 + 2²⁰ + 6⁸ + 8⁴ + 0 + 5⁷ .

It is a Duffinian number.

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, 282676 + ... + 282685.

It is an arithmetic number, because the mean of its divisors is an integer number (848043).

2^2826805 is an apocalyptic number.

It is an amenable number.

2826805 is a deficient number, since it is larger than the sum of its proper divisors (565367).

2826805 is an equidigital number, since it uses as much as digits as its factorization.

2826805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565366.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 2826805 is about 1681.3105007702. The cubic root of 2826805 is about 141.3943156549.

Subtracting from 2826805 its product of nonzero digits (7680), we obtain a triangular number (2819125 = T₂₃₇₄).

The spelling of 2826805 in words is "two million, eight hundred twenty-six thousand, eight hundred five".