6488240 has 80 divisors (see below), whose sum is σ = 16847136. Its totient is φ = 2304000.

The previous prime is 6488239. The next prime is 6488243. The reversal of 6488240 is 428846.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 6488197 and 6488206.

It is not an unprimeable number, because it can be changed into a prime (6488243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64190 + ... + 64290.

Almost surely, 2^6488240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6488240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8423568).

6488240 is an abundant number, since it is smaller than the sum of its proper divisors (10358896).

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

6488240 is a wasteful number, since it uses less digits than its factorization.

6488240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 6488240 is about 2547.2023869336. The cubic root of 6488240 is about 186.5129403293.

It can be divided in two parts, 648 and 8240, that added together give a palindrome (8888).

The spelling of 6488240 in words is "six million, four hundred eighty-eight thousand, two hundred forty".