3520120261 has 24 divisors (see below), whose sum is σ = 4279322880. Its totient is φ = 2881704672.

The previous prime is 3520120237. The next prime is 3520120271. The reversal of 3520120261 is 1620210253.

3520120261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3520120261 - 2¹¹ = 3520118213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520120271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 896260 + ... + 900178.

It is an arithmetic number, because the mean of its divisors is an integer number (178305120).

Almost surely, 2^3520120261 is an apocalyptic number.

It is an amenable number.

3520120261 is a deficient number, since it is larger than the sum of its proper divisors (759202619).

3520120261 is a wasteful number, since it uses less digits than its factorization.

3520120261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753 (or 4746 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 3520120261 is about 59330.6013874796. The cubic root of 3520120261 is about 1521.1983078522.

The spelling of 3520120261 in words is "three billion, five hundred twenty million, one hundred twenty thousand, two hundred sixty-one".