2856822 has 8 divisors (see below), whose sum is σ = 5713656. Its totient is φ = 952272.

The previous prime is 2856809. The next prime is 2856823. The reversal of 2856822 is 2286582.

It is a sphenic number, since it is the product of 3 distinct primes.

2856822 is an admirable number.

It is a super-2 number, since 2×2856822² = 16322863879368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856823) 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, 238063 + ... + 238074.

It is an arithmetic number, because the mean of its divisors is an integer number (714207).

2^2856822 is an apocalyptic number.

2856822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2856822 is a wasteful number, since it uses less digits than its factorization.

2856822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476142.

The product of its digits is 15360, while the sum is 33.

The square root of 2856822 is about 1690.2135959695. The cubic root of 2856822 is about 141.8930292703.

The spelling of 2856822 in words is "two million, eight hundred fifty-six thousand, eight hundred twenty-two".