3222420 has 48 divisors (see below), whose sum is σ = 9240000. Its totient is φ = 838656.

The previous prime is 3222413. The next prime is 3222467. The reversal of 3222420 is 242223.

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 3222420.

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, 1956 + ... + 3204.

It is an arithmetic number, because the mean of its divisors is an integer number (192500).

Almost surely, 2^3222420 is an apocalyptic number.

3222420 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 3222420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4620000).

3222420 is an abundant number, since it is smaller than the sum of its proper divisors (6017580).

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

3222420 is a wasteful number, since it uses less digits than its factorization.

3222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 3222420 is about 1795.1100244832. The cubic root of 3222420 is about 147.7046092685.

Adding to 3222420 its reverse (242223), we get a palindrome (3464643).

The spelling of 3222420 in words is "three million, two hundred twenty-two thousand, four hundred twenty".