4220018 has 16 divisors (see below), whose sum is σ = 6937056. Its totient is φ = 1909440.

The previous prime is 4219991. The next prime is 4220039. The reversal of 4220018 is 8100224.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4219978 and 4220005.

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, 9305 + ... + 9747.

It is an arithmetic number, because the mean of its divisors is an integer number (433566).

Almost surely, 2^4220018 is an apocalyptic number.

4220018 is a deficient number, since it is larger than the sum of its proper divisors (2717038).

4220018 is a wasteful number, since it uses less digits than its factorization.

4220018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4220018 is about 2054.2682395442. The cubic root of 4220018 is about 161.5987887126.

It can be divided in two parts, 4 and 220018, that added together give a palindrome (220022).

The spelling of 4220018 in words is "four million, two hundred twenty thousand, eighteen".