6470728 has 48 divisors (see below), whose sum is σ = 13935600. Its totient is φ = 2793120.

The previous prime is 6470701. The next prime is 6470729. The reversal of 6470728 is 8270746.

It is a d-powerful number, because it can be written as 6⁷ + 4⁹ + 7 + 0 + 7⁸ + 2¹⁷ + 8⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 6470693 and 6470702.

It is not an unprimeable number, because it can be changed into a prime (6470729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46483 + ... + 46621.

It is an arithmetic number, because the mean of its divisors is an integer number (290325).

Almost surely, 2^6470728 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 6470728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6967800).

6470728 is an abundant number, since it is smaller than the sum of its proper divisors (7464872).

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

6470728 is a wasteful number, since it uses less digits than its factorization.

6470728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 6470728 is about 2543.7625675365. The cubic root of 6470728 is about 186.3449873575.

The spelling of 6470728 in words is "six million, four hundred seventy thousand, seven hundred twenty-eight".