2018220 has 24 divisors (see below), whose sum is σ = 5651184. Its totient is φ = 538176.

The previous prime is 2018183. The next prime is 2018249. The reversal of 2018220 is 228102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2018220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16759 + ... + 16878.

It is an arithmetic number, because the mean of its divisors is an integer number (235466).

2^2018220 is an apocalyptic number.

2018220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018220 is an abundant number, since it is smaller than the sum of its proper divisors (3632964).

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

2018220 is a wasteful number, since it uses less digits than its factorization.

2018220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33649 (or 33647 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2018220 is about 1420.6407005292. The cubic root of 2018220 is about 126.3735450430.

It can be divided in two parts, 20182 and 20, that added together give a palindrome (20202).

The spelling of 2018220 in words is "two million, eighteen thousand, two hundred twenty".