4228218 has 24 divisors (see below), whose sum is σ = 9199008. Its totient is φ = 1403592.

The previous prime is 4228199. The next prime is 4228243. The reversal of 4228218 is 8128224.

It is a junction number, because it is equal to n+sod(n) for n = 4228191 and 4228200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8155 + ... + 8657.

It is an arithmetic number, because the mean of its divisors is an integer number (383292).

Almost surely, 2^4228218 is an apocalyptic number.

4228218 is an abundant number, since it is smaller than the sum of its proper divisors (4970790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4228218 is a wasteful number, since it uses less digits than its factorization.

4228218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 975 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 4228218 is about 2056.2631154597. The cubic root of 4228218 is about 161.7033895864.

The spelling of 4228218 in words is "four million, two hundred twenty-eight thousand, two hundred eighteen".