2218306 has 8 divisors (see below), whose sum is σ = 3398400. Its totient is φ = 1085508.

The previous prime is 2218289. The next prime is 2218319. The reversal of 2218306 is 6038122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11706 + ... + 11893.

It is an arithmetic number, because the mean of its divisors is an integer number (424800).

2^2218306 is an apocalyptic number.

2218306 is a deficient number, since it is larger than the sum of its proper divisors (1180094).

2218306 is a wasteful number, since it uses less digits than its factorization.

2218306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23648.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2218306 is about 1489.3978649105. The cubic root of 2218306 is about 130.4188855054.

The spelling of 2218306 in words is "two million, two hundred eighteen thousand, three hundred six".