4028218 has 16 divisors (see below), whose sum is σ = 6436584. Its totient is φ = 1884160.

The previous prime is 4028191. The next prime is 4028221. The reversal of 4028218 is 8128204.

It can be written as a sum of positive squares in 4 ways, for example, as 4028049 + 169 = 2007^2 + 13^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4028192 and 4028201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8508 + ... + 8968.

Almost surely, 2^4028218 is an apocalyptic number.

4028218 is a deficient number, since it is larger than the sum of its proper divisors (2408366).

4028218 is a wasteful number, since it uses less digits than its factorization.

4028218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 4028218 is about 2007.0421021992. The cubic root of 4028218 is about 159.1125082165.

The spelling of 4028218 in words is "four million, twenty-eight thousand, two hundred eighteen".