2273218 has 4 divisors (see below), whose sum is σ = 3409830. Its totient is φ = 1136608.

The previous prime is 2273213. The next prime is 2273231. The reversal of 2273218 is 8123722.

2273218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 2082249 + 190969 = 1443^2 + 437^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2273192 and 2273201.

It is not an unprimeable number, because it can be changed into a prime (2273213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568303 + ... + 568306.

2^2273218 is an apocalyptic number.

2273218 is a deficient number, since it is larger than the sum of its proper divisors (1136612).

2273218 is a wasteful number, since it uses less digits than its factorization.

2273218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136611.

The product of its digits is 1344, while the sum is 25.

The square root of 2273218 is about 1507.7194699280. The cubic root of 2273218 is about 131.4862568586.

The spelling of 2273218 in words is "two million, two hundred seventy-three thousand, two hundred eighteen".