even, composite · 728th positive integer
The number 728
728 is an even composite number. It is the 728th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 7 × 13 |
| Divisors | 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728 |
| Binary | 1011011000 |
| Hexadecimal | 0x2D8 |
| Roman numeral | DCCXXVIII |
| Digit sum | 17 |
| Properties | even, composite |
Reading 728 in NumGrid context
The 728 record above pulls directly from classical number theory plus NumGrid solver-derived puzzle statistics. What follows is the per-entity context — how 728 sits in the broader integer properties and number-guessing puzzles distribution and which underlying factors drive the headline numbers.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 728 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
Frequently asked
Is 728 a prime number?
No. 728 is composite. Its prime factorization is 2 × 2 × 2 × 7 × 13.
What are the factors of 728?
The factors (divisors) of 728 are 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728.
What is 728 in binary?
728 in binary is 1011011000. In hexadecimal it's 2D8.
What is 728 as a Roman numeral?
728 in Roman numerals is DCCXXVIII.
What's the digit sum of 728?
Adding the digits of 728: 7 + 2 + 8 = 17.