3520260 has 120 divisors (see below), whose sum is σ = 11525976. Its totient is φ = 898560.

The previous prime is 3520243. The next prime is 3520261. The reversal of 3520260 is 620253.

3520260 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 4 ways, for example, as 82944 + 3437316 = 288^2 + 1854^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3520261) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 66394 + ... + 66446.

Almost surely, 2^3520260 is an apocalyptic number.

3520260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3520260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5762988).

3520260 is an abundant number, since it is smaller than the sum of its proper divisors (8005716).

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

3520260 is a wasteful number, since it uses less digits than its factorization.

3520260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3520260 is about 1876.2355928827. The cubic root of 3520260 is about 152.1218436702.

The spelling of 3520260 in words is "three million, five hundred twenty thousand, two hundred sixty".