3201220 has 24 divisors (see below), whose sum is σ = 7334208. Its totient is φ = 1164000.

The previous prime is 3201199. The next prime is 3201229. The reversal of 3201220 is 221023.

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 = 3201197 and 3201206.

It is not an unprimeable number, because it can be changed into a prime (3201229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7056 + ... + 7495.

It is an arithmetic number, because the mean of its divisors is an integer number (305592).

Almost surely, 2^3201220 is an apocalyptic number.

It is an amenable number.

3201220 is an abundant number, since it is smaller than the sum of its proper divisors (4132988).

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

3201220 is a wasteful number, since it uses less digits than its factorization.

3201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14571 (or 14569 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 3201220 is about 1789.1953498710. The cubic root of 3201220 is about 147.3799847263.

Adding to 3201220 its reverse (221023), we get a palindrome (3422243).

It can be divided in two parts, 320 and 1220, that added together give a triangular number (1540 = T₅₅).

The spelling of 3201220 in words is "three million, two hundred one thousand, two hundred twenty".