2812287 has 4 divisors (see below), whose sum is σ = 3749720. Its totient is φ = 1874856.

The previous prime is 2812267. The next prime is 2812291. The reversal of 2812287 is 7822182.

It is a happy number.

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

It is not a de Polignac number, because 2812287 - 2⁶ = 2812223 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2812207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468712 + ... + 468717.

It is an arithmetic number, because the mean of its divisors is an integer number (937430).

2^2812287 is an apocalyptic number.

2812287 is a deficient number, since it is larger than the sum of its proper divisors (937433).

2812287 is an equidigital number, since it uses as much as digits as its factorization.

2812287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937432.

The product of its digits is 3584, while the sum is 30.

The square root of 2812287 is about 1676.9874775919. The cubic root of 2812287 is about 141.1518408524.

The spelling of 2812287 in words is "two million, eight hundred twelve thousand, two hundred eighty-seven".