6480240 has 160 divisors (see below), whose sum is σ = 22665216. Its totient is φ = 1520640.

The previous prime is 6480239. The next prime is 6480251. The reversal of 6480240 is 420846.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 6480240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96687 + ... + 96753.

Almost surely, 2^6480240 is an apocalyptic number.

6480240 is a gapful number since it is divisible by the number (60) 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 6480240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11332608).

6480240 is an abundant number, since it is smaller than the sum of its proper divisors (16184976).

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

6480240 is a wasteful number, since it uses less digits than its factorization.

6480240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 6480240 is about 2545.6315522872. The cubic root of 6480240 is about 186.4362519825.

The spelling of 6480240 in words is "six million, four hundred eighty thousand, two hundred forty".