4331220 has 48 divisors (see below), whose sum is σ = 12461568. Its totient is φ = 1123200.

The previous prime is 4331219. The next prime is 4331251. The reversal of 4331220 is 221334.

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 4331220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245 + ... + 3195.

It is an arithmetic number, because the mean of its divisors is an integer number (259616).

Almost surely, 2^4331220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6230784).

4331220 is an abundant number, since it is smaller than the sum of its proper divisors (8130348).

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

4331220 is a wasteful number, since it uses less digits than its factorization.

4331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000 (or 1998 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 4331220 is about 2081.1583313146. The cubic root of 4331220 is about 163.0059340181.

Adding to 4331220 its reverse (221334), we get a palindrome (4552554).

It can be divided in two parts, 433 and 1220, that added together give a triangular number (1653 = T₅₇).

The spelling of 4331220 in words is "four million, three hundred thirty-one thousand, two hundred twenty".