2216018 has 16 divisors (see below), whose sum is σ = 4022784. Its totient is φ = 893760.

The previous prime is 2215999. The next prime is 2216021. The reversal of 2216018 is 8106122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4418 + ... + 4893.

It is an arithmetic number, because the mean of its divisors is an integer number (251424).

2^2216018 is an apocalyptic number.

2216018 is a deficient number, since it is larger than the sum of its proper divisors (1806766).

2216018 is a wasteful number, since it uses less digits than its factorization.

2216018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9337.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2216018 is about 1488.6295711157. The cubic root of 2216018 is about 130.3740312998.

The spelling of 2216018 in words is "two million, two hundred sixteen thousand, eighteen".