4226218 has 4 divisors (see below), whose sum is σ = 6339330. Its totient is φ = 2113108.

The previous prime is 4226213. The next prime is 4226219. The reversal of 4226218 is 8126224.

It is a happy number.

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., 2411809 + 1814409 = 1553^2 + 1347^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4226192 and 4226201.

It is not an unprimeable number, because it can be changed into a prime (4226213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056553 + ... + 1056556.

Almost surely, 2^4226218 is an apocalyptic number.

4226218 is a deficient number, since it is larger than the sum of its proper divisors (2113112).

4226218 is a wasteful number, since it uses less digits than its factorization.

4226218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113111.

The product of its digits is 1536, while the sum is 25.

The square root of 4226218 is about 2055.7767388508. The cubic root of 4226218 is about 161.6778896567.

It can be divided in two parts, 4226 and 218, that added together give a palindrome (4444).

The spelling of 4226218 in words is "four million, two hundred twenty-six thousand, two hundred eighteen".