2856868 has 12 divisors (see below), whose sum is σ = 5713792. Its totient is φ = 1224360.

The previous prime is 2856863. The next prime is 2856871. The reversal of 2856868 is 8686582.

It is a happy number.

2856868 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2856863) 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, 50988 + ... + 51043.

2^2856868 is an apocalyptic number.

2856868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2856868 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.

2856868 is a wasteful number, since it uses less digits than its factorization.

2856868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102042 (or 102040 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 2856868 is about 1690.2272036623. The cubic root of 2856868 is about 141.8937908443.

The spelling of 2856868 in words is "two million, eight hundred fifty-six thousand, eight hundred sixty-eight".