6530240 has 28 divisors (see below), whose sum is σ = 15550896. Its totient is φ = 2611968.

The previous prime is 6530221. The next prime is 6530257. The reversal of 6530240 is 420356.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 9884 + ... + 10523.

Almost surely, 2^6530240 is an apocalyptic number.

It is an amenable number.

6530240 is an abundant number, since it is smaller than the sum of its proper divisors (9020656).

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

6530240 is a wasteful number, since it uses less digits than its factorization.

6530240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20424 (or 20414 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 6530240 is about 2555.4334270335. The cubic root of 6530240 is about 186.9145233570.

Adding to 6530240 its reverse (420356), we get a palindrome (6950596).

The spelling of 6530240 in words is "six million, five hundred thirty thousand, two hundred forty".