2812865 has 16 divisors (see below), whose sum is σ = 3715200. Its totient is φ = 2027520.

The previous prime is 2812853. The next prime is 2812867. The reversal of 2812865 is 5682182.

It is not a de Polignac number, because 2812865 - 2⁶ = 2812801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2812867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10817 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (232200).

2^2812865 is an apocalyptic number.

It is an amenable number.

2812865 is a deficient number, since it is larger than the sum of its proper divisors (902335).

2812865 is a wasteful number, since it uses less digits than its factorization.

2812865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472.

The product of its digits is 7680, while the sum is 32.

The square root of 2812865 is about 1677.1598015693. The cubic root of 2812865 is about 141.1615103463.

The spelling of 2812865 in words is "two million, eight hundred twelve thousand, eight hundred sixty-five".