2812868 has 6 divisors (see below), whose sum is σ = 4922526. Its totient is φ = 1406432.

The previous prime is 2812867. The next prime is 2812883. The reversal of 2812868 is 8682182.

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 1295044 = 1232^2 + 1138^2 .

It is an Ulam number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 351605 + ... + 351612.

It is an arithmetic number, because the mean of its divisors is an integer number (820421).

2^2812868 is an apocalyptic number.

It is an amenable number.

2812868 is a deficient number, since it is larger than the sum of its proper divisors (2109658).

2812868 is a wasteful number, since it uses less digits than its factorization.

2812868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703221 (or 703219 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 2812868 is about 1677.1606959382. The cubic root of 2812868 is about 141.1615605305.

The spelling of 2812868 in words is "two million, eight hundred twelve thousand, eight hundred sixty-eight".