2543868 has 18 divisors (see below), whose sum is σ = 6430424. Its totient is φ = 847944.

The previous prime is 2543843. The next prime is 2543873. The reversal of 2543868 is 8683452.

2543868 is digitally balanced in base 5, 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 (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 70663 = 2543868 / (2 + 5 + 4 + 3 + 8 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35296 + ... + 35367.

2^2543868 is an apocalyptic number.

It is an amenable number.

2543868 is an abundant number, since it is smaller than the sum of its proper divisors (3886556).

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

2543868 is a wasteful number, since it uses less digits than its factorization.

2543868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70673 (or 70668 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 2543868 is about 1594.9507829397. The cubic root of 2543868 is about 136.5101228253.

The spelling of 2543868 in words is "two million, five hundred forty-three thousand, eight hundred sixty-eight".