3505220 has 12 divisors (see below), whose sum is σ = 7361004. Its totient is φ = 1402080.

The previous prime is 3505219. The next prime is 3505237. The reversal of 3505220 is 225053.

3505220 is digitally balanced in base 2, 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 1982464 + 1522756 = 1408^2 + 1234^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87611 + ... + 87650.

It is an arithmetic number, because the mean of its divisors is an integer number (613417).

Almost surely, 2^3505220 is an apocalyptic number.

It is an amenable number.

3505220 is an abundant number, since it is smaller than the sum of its proper divisors (3855784).

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

3505220 is a wasteful number, since it uses less digits than its factorization.

3505220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175270 (or 175268 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 3505220 is about 1872.2232772829. The cubic root of 3505220 is about 151.9048920259.

The spelling of 3505220 in words is "three million, five hundred five thousand, two hundred twenty".