3240520 has 16 divisors (see below), whose sum is σ = 7291260. Its totient is φ = 1296192.

The previous prime is 3240499. The next prime is 3240527. The reversal of 3240520 is 250423.

It can be written as a sum of positive squares in 2 ways, for example, as 2802276 + 438244 = 1674^2 + 662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3240494 and 3240503.

It is not an unprimeable number, because it can be changed into a prime (3240527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40467 + ... + 40546.

Almost surely, 2^3240520 is an apocalyptic number.

It is an amenable number.

3240520 is an abundant number, since it is smaller than the sum of its proper divisors (4050740).

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

3240520 is a wasteful number, since it uses less digits than its factorization.

3240520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81024 (or 81020 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3240520 is about 1800.1444386493. The cubic root of 3240520 is about 147.9806402727.

Adding to 3240520 its reverse (250423), we get a palindrome (3490943).

The spelling of 3240520 in words is "three million, two hundred forty thousand, five hundred twenty".