2861868 has 24 divisors (see below), whose sum is σ = 6773760. Its totient is φ = 940240.

The previous prime is 2861861. The next prime is 2861869. The reversal of 2861868 is 8681682.

It is not an unprimeable number, because it can be changed into a prime (2861861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

2^2861868 is an apocalyptic number.

It is an amenable number.

2861868 is an abundant number, since it is smaller than the sum of its proper divisors (3911892).

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

2861868 is a wasteful number, since it uses less digits than its factorization.

2861868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437 (or 3435 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 2861868 is about 1691.7056481551. The cubic root of 2861868 is about 141.9765219400.

The spelling of 2861868 in words is "two million, eight hundred sixty-one thousand, eight hundred sixty-eight".