3443240 has 32 divisors (see below), whose sum is σ = 7884000. Its totient is φ = 1353024.

The previous prime is 3443239. The next prime is 3443243. The reversal of 3443240 is 423443.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (3443243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1631 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (246375).

Almost surely, 2^3443240 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 3443240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3942000).

3443240 is an abundant number, since it is smaller than the sum of its proper divisors (4440760).

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

3443240 is a wasteful number, since it uses less digits than its factorization.

3443240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 3443240 is about 1855.5969389929. The cubic root of 3443240 is about 151.0042248427.

Adding to 3443240 its reverse (423443), we get a palindrome (3866683).

The spelling of 3443240 in words is "three million, four hundred forty-three thousand, two hundred forty".