3242240 has 72 divisors (see below), whose sum is σ = 8278200. Its totient is φ = 1212416.

The previous prime is 3242237. The next prime is 3242251. The reversal of 3242240 is 422423.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 3041536 = 448^2 + 1744^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 21686 + ... + 21834.

It is an arithmetic number, because the mean of its divisors is an integer number (114975).

Almost surely, 2^3242240 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 3242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4139100).

3242240 is an abundant number, since it is smaller than the sum of its proper divisors (5035960).

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

3242240 is a wasteful number, since it uses less digits than its factorization.

3242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 3242240 is about 1800.6221147148. The cubic root of 3242240 is about 148.0068173144.

Adding to 3242240 its reverse (422423), we get a palindrome (3664663).

The spelling of 3242240 in words is "three million, two hundred forty-two thousand, two hundred forty".