3543440 has 20 divisors (see below), whose sum is σ = 8238684. Its totient is φ = 1417344.

The previous prime is 3543433. The next prime is 3543451. The reversal of 3543440 is 443453.

It is a happy number.

3543440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2262016 + 1281424 = 1504^2 + 1132^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22067 + ... + 22226.

Almost surely, 2^3543440 is an apocalyptic number.

It is an amenable number.

3543440 is an abundant number, since it is smaller than the sum of its proper divisors (4695244).

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

3543440 is a wasteful number, since it uses less digits than its factorization.

3543440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44306 (or 44300 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 3543440 is about 1882.4027199300. The cubic root of 3543440 is about 152.4550077789.

Adding to 3543440 its reverse (443453), we get a palindrome (3986893).

The spelling of 3543440 in words is "three million, five hundred forty-three thousand, four hundred forty".