2213868 has 12 divisors (see below), whose sum is σ = 5165720. Its totient is φ = 737952.

The previous prime is 2213867. The next prime is 2213891. The reversal of 2213868 is 8683122.

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

It is not an unprimeable number, because it can be changed into a prime (2213867) 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, 92233 + ... + 92256.

2^2213868 is an apocalyptic number.

It is an amenable number.

2213868 is an abundant number, since it is smaller than the sum of its proper divisors (2951852).

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

2213868 is a wasteful number, since it uses less digits than its factorization.

2213868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184496 (or 184494 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 2213868 is about 1487.9072551742. The cubic root of 2213868 is about 130.3318543158.

It can be divided in two parts, 2213 and 868, that added together give a triangular number (3081 = T₇₈).

The spelling of 2213868 in words is "two million, two hundred thirteen thousand, eight hundred sixty-eight".