2821085 has 16 divisors (see below), whose sum is σ = 3516480. Its totient is φ = 2171520.

The previous prime is 2821079. The next prime is 2821097. The reversal of 2821085 is 5801282.

It is not a de Polignac number, because 2821085 - 2¹⁶ = 2755549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21470 + ... + 21600.

It is an arithmetic number, because the mean of its divisors is an integer number (219780).

2^2821085 is an apocalyptic number.

It is an amenable number.

2821085 is a deficient number, since it is larger than the sum of its proper divisors (695395).

2821085 is a wasteful number, since it uses less digits than its factorization.

2821085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 2821085 is about 1679.6085853555. The cubic root of 2821085 is about 141.2988814556.

The spelling of 2821085 in words is "two million, eight hundred twenty-one thousand, eighty-five".