2180220 has 96 divisors (see below), whose sum is σ = 7257600. Its totient is φ = 478464.

The previous prime is 2180219. The next prime is 2180221. The reversal of 2180220 is 220812.

2180220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2180219) and next prime (2180221).

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 2180220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12091 + ... + 12269.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2^2180220 is an apocalyptic number.

2180220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2180220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3628800).

2180220 is an abundant number, since it is smaller than the sum of its proper divisors (5077380).

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

2180220 is a wasteful number, since it uses less digits than its factorization.

2180220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 225 counting only the distinct ones).

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

The square root of 2180220 is about 1476.5568055446. The cubic root of 2180220 is about 129.6681873308.

The spelling of 2180220 in words is "two million, one hundred eighty thousand, two hundred twenty".