2003220 has 72 divisors (see below), whose sum is σ = 6289920. Its totient is φ = 515520.

The previous prime is 2003213. The next prime is 2003237. The reversal of 2003220 is 223002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5401 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (87360).

2^2003220 is an apocalyptic number.

2003220 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 2003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3144960).

2003220 is an abundant number, since it is smaller than the sum of its proper divisors (4286700).

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

2003220 is a wasteful number, since it uses less digits than its factorization.

2003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 2003220 is about 1415.3515464364. The cubic root of 2003220 is about 126.0596844978.

Adding to 2003220 its reverse (223002), we get a palindrome (2226222).

The spelling of 2003220 in words is "two million, three thousand, two hundred twenty".