3505240 has 16 divisors (see below), whose sum is σ = 7886880. Its totient is φ = 1402080.

The previous prime is 3505237. The next prime is 3505267. The reversal of 3505240 is 425053.

It is a happy number.

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, 43776 + ... + 43855.

It is an arithmetic number, because the mean of its divisors is an integer number (492930).

Almost surely, 2^3505240 is an apocalyptic number.

It is an amenable number.

3505240 is an abundant number, since it is smaller than the sum of its proper divisors (4381640).

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

3505240 is a wasteful number, since it uses less digits than its factorization.

3505240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87642 (or 87638 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 3505240 is about 1872.2286185186. The cubic root of 3505240 is about 151.9051809371.

The spelling of 3505240 in words is "three million, five hundred five thousand, two hundred forty".