2220220 has 24 divisors (see below), whose sum is σ = 4814208. Its totient is φ = 859200.

The previous prime is 2220209. The next prime is 2220263. The reversal of 2220220 is 220222.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2220197 and 2220206.

It is a congruent number.

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, 1171 + ... + 2410.

It is an arithmetic number, because the mean of its divisors is an integer number (200592).

2^2220220 is an apocalyptic number.

2220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220220 is an abundant number, since it is smaller than the sum of its proper divisors (2593988).

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

2220220 is a wasteful number, since it uses less digits than its factorization.

2220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621 (or 3619 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2220220 is about 1490.0402679122. The cubic root of 2220220 is about 130.4563840874.

Adding to 2220220 its reverse (220222), we get a palindrome (2440442).

It can be divided in two parts, 22202 and 20, that added together give a palindrome (22222).

The spelling of 2220220 in words is "two million, two hundred twenty thousand, two hundred twenty".