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2868 = 223239

2868 has 12 divisors (see below), whose sum is σ = 6720. Its totient is φ = 952.

The previous prime is 2861. The next prime is 2879. The reversal of 2868 is 8682.

2868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 7.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861) 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, 108 + ... + 131.

It is an arithmetic number, because the mean of its divisors is an integer number (560).

22868 is an apocalyptic number.

It is an amenable number.

2868 is an abundant number, since it is smaller than the sum of its proper divisors (3852).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3360).

2868 is a wasteful number, since it uses less digits than its factorization.

2868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 244 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 2868 is about 53.5537113560. The cubic root of 2868 is about 14.2077851907.

The spelling of 2868 in words is "two thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 239 478 717 956 1434 2868