3200220 has 72 divisors (see below), whose sum is σ = 10142496. Its totient is φ = 815232.

The previous prime is 3200213. The next prime is 3200251. The reversal of 3200220 is 220023.

3200220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3754 + ... + 4526.

It is an arithmetic number, because the mean of its divisors is an integer number (140868).

Almost surely, 2^3200220 is an apocalyptic number.

3200220 is a gapful number since it is divisible by the number (30) 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 3200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5071248).

3200220 is an abundant number, since it is smaller than the sum of its proper divisors (6942276).

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

3200220 is a wasteful number, since it uses less digits than its factorization.

3200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 806 counting only the distinct ones).

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

The square root of 3200220 is about 1788.9158728124. The cubic root of 3200220 is about 147.3646368971.

Adding to 3200220 its reverse (220023), we get a palindrome (3420243).

The spelling of 3200220 in words is "three million, two hundred thousand, two hundred twenty".