3221340 has 48 divisors (see below), whose sum is σ = 9199008. Its totient is φ = 841984.

The previous prime is 3221327. The next prime is 3221353. The reversal of 3221340 is 431223.

3221340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3221327) and next prime (3221353).

It is a Harshad number since it is a multiple of its sum of digits (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 15 ways as a sum of consecutive naturals, for example, 2674 + ... + 3686.

It is an arithmetic number, because the mean of its divisors is an integer number (191646).

Almost surely, 2^3221340 is an apocalyptic number.

3221340 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 3221340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4599504).

3221340 is an abundant number, since it is smaller than the sum of its proper divisors (5977668).

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

3221340 is a wasteful number, since it uses less digits than its factorization.

3221340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1076 counting only the distinct ones).

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

The square root of 3221340 is about 1794.8091820581. The cubic root of 3221340 is about 147.6881062674.

Adding to 3221340 its reverse (431223), we get a palindrome (3652563).

The spelling of 3221340 in words is "three million, two hundred twenty-one thousand, three hundred forty".