3218340 has 24 divisors (see below), whose sum is σ = 9011520. Its totient is φ = 858208.

The previous prime is 3218323. The next prime is 3218357. The reversal of 3218340 is 438123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3218323) and next prime (3218357).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26760 + ... + 26879.

It is an arithmetic number, because the mean of its divisors is an integer number (375480).

Almost surely, 2^3218340 is an apocalyptic number.

3218340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3218340 is an abundant number, since it is smaller than the sum of its proper divisors (5793180).

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

3218340 is a wasteful number, since it uses less digits than its factorization.

3218340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53651 (or 53649 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 3218340 is about 1793.9732439476. The cubic root of 3218340 is about 147.6422452354.

It can be divided in two parts, 32183 and 40, that added together give a palindrome (32223).

The spelling of 3218340 in words is "three million, two hundred eighteen thousand, three hundred forty".