6478240 has 48 divisors (see below), whose sum is σ = 16117920. Its totient is φ = 2453760.

The previous prime is 6478229. The next prime is 6478267. The reversal of 6478240 is 428746.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1975 + ... + 4105.

It is an arithmetic number, because the mean of its divisors is an integer number (335790).

Almost surely, 2^6478240 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 6478240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8058960).

6478240 is an abundant number, since it is smaller than the sum of its proper divisors (9639680).

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

6478240 is a wasteful number, since it uses less digits than its factorization.

6478240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165 (or 2157 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 6478240 is about 2545.2386921466. The cubic root of 6478240 is about 186.4170700350.

The spelling of 6478240 in words is "six million, four hundred seventy-eight thousand, two hundred forty".