2216868 has 24 divisors (see below), whose sum is σ = 5477472. Its totient is φ = 695424.

The previous prime is 2216861. The next prime is 2216873. The reversal of 2216868 is 8686122.

It is not an unprimeable number, because it can be changed into a prime (2216861) 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, 5230 + ... + 5637.

It is an arithmetic number, because the mean of its divisors is an integer number (228228).

2^2216868 is an apocalyptic number.

It is an amenable number.

2216868 is an abundant number, since it is smaller than the sum of its proper divisors (3260604).

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

2216868 is a wasteful number, since it uses less digits than its factorization.

2216868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10891 (or 10889 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 2216868 is about 1488.9150412297. The cubic root of 2216868 is about 130.3906983968.

The spelling of 2216868 in words is "two million, two hundred sixteen thousand, eight hundred sixty-eight".