3520040240 has 40 divisors (see below), whose sum is σ = 8383713408. Its totient is φ = 1373672960.

The previous prime is 3520040207. The next prime is 3520040261. The reversal of 3520040240 is 420400253.

3520040240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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

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, 533312 + ... + 539871.

Almost surely, 2^3520040240 is an apocalyptic number.

It is an amenable number.

3520040240 is an abundant number, since it is smaller than the sum of its proper divisors (4863673168).

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

3520040240 is a wasteful number, since it uses less digits than its factorization.

3520040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073237 (or 1073231 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 3520040240 is about 59329.9270183269. The cubic root of 3520040240 is about 1521.1867809039.

Adding to 3520040240 its reverse (420400253), we get a palindrome (3940440493).

The spelling of 3520040240 in words is "three billion, five hundred twenty million, forty thousand, two hundred forty".