2800085 has 4 divisors (see below), whose sum is σ = 3360108. Its totient is φ = 2240064.

The previous prime is 2800079. The next prime is 2800103. The reversal of 2800085 is 5800082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1062961 + 1737124 = 1031^2 + 1318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2800085 - 2⁴ = 2800069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2800085.

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 3 ways as a sum of consecutive naturals, for example, 280004 + ... + 280013.

It is an arithmetic number, because the mean of its divisors is an integer number (840027).

2^2800085 is an apocalyptic number.

It is an amenable number.

2800085 is a deficient number, since it is larger than the sum of its proper divisors (560023).

2800085 is an equidigital number, since it uses as much as digits as its factorization.

2800085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560022.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 2800085 is about 1673.3454514833. The cubic root of 2800085 is about 140.9474008659.

The spelling of 2800085 in words is "two million, eight hundred thousand, eighty-five".