2306218 has 4 divisors (see below), whose sum is σ = 3459330. Its totient is φ = 1153108.

The previous prime is 2306197. The next prime is 2306221. The reversal of 2306218 is 8126032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2199289 + 106929 = 1483^2 + 327^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576553 + ... + 576556.

2^2306218 is an apocalyptic number.

2306218 is a deficient number, since it is larger than the sum of its proper divisors (1153112).

2306218 is a wasteful number, since it uses less digits than its factorization.

2306218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153111.

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

The square root of 2306218 is about 1518.6237190298. The cubic root of 2306218 is about 132.1194587393.

The spelling of 2306218 in words is "two million, three hundred six thousand, two hundred eighteen".