4420218 has 16 divisors (see below), whose sum is σ = 9644256. Its totient is φ = 1339440.

The previous prime is 4420189. The next prime is 4420219. The reversal of 4420218 is 8120244.

4420218 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4420194 and 4420203.

It is not an unprimeable number, because it can be changed into a prime (4420219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33421 + ... + 33552.

It is an arithmetic number, because the mean of its divisors is an integer number (602766).

Almost surely, 2^4420218 is an apocalyptic number.

4420218 is an abundant number, since it is smaller than the sum of its proper divisors (5224038).

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

4420218 is a wasteful number, since it uses less digits than its factorization.

4420218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66989.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 4420218 is about 2102.4314495365. The cubic root of 4420218 is about 164.1148560884.

The spelling of 4420218 in words is "four million, four hundred twenty thousand, two hundred eighteen".