3243240 has 320 divisors, whose sum is σ = 14636160. Its totient is φ = 622080.

The previous prime is 3243239. The next prime is 3243271. The reversal of 3243240 is 423423.

3243240 is digitally balanced in base 5 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

3243240 is strictly pandigital in base 8.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 195 × 99 × 168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 249474 + ... + 249486.

It is an arithmetic number, because the mean of its divisors is an integer number (45738).

Almost surely, 2^3243240 is an apocalyptic number.

3243240 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 3243240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7318080).

3243240 is an abundant number, since it is smaller than the sum of its proper divisors (11392920).

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

3243240 is a wasteful number, since it uses less digits than its factorization.

3243240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 3243240 is about 1800.8997751124. The cubic root of 3243240 is about 148.0220322690.

Adding to 3243240 its reverse (423423), we get a palindrome (3666663).

The spelling of 3243240 in words is "three million, two hundred forty-three thousand, two hundred forty".