2812838 has 16 divisors (see below), whose sum is σ = 4844544. Its totient is φ = 1199880.

The previous prime is 2812829. The next prime is 2812853. The reversal of 2812838 is 8382182.

It is a super-2 number, since 2×2812838² = 15824115228488, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 4331 + ... + 4937.

It is an arithmetic number, because the mean of its divisors is an integer number (302784).

2^2812838 is an apocalyptic number.

2812838 is a deficient number, since it is larger than the sum of its proper divisors (2031706).

2812838 is a wasteful number, since it uses less digits than its factorization.

2812838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947.

The product of its digits is 6144, while the sum is 32.

The square root of 2812838 is about 1677.1517522276. The cubic root of 2812838 is about 141.1610586866.

The spelling of 2812838 in words is "two million, eight hundred twelve thousand, eight hundred thirty-eight".