4320
4,320 is the vertical resolution of 8K video.
- Even
- Composite
Where 4320 fits
Why 4320 is special
It is exactly four times 1080p in each direction, so one 8K frame holds sixteen 1080p frames. At normal viewing distances the extra detail is beyond what most eyes resolve, which is why adoption has been slow.
Factors & digit properties
- Divisors (48)
- 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 216, 240, 270, 288, 360, 432, 480, 540, 720, 864, 1080, 1440, 2160, 4320
- Prime factorisation
- 2^5 × 3^3 × 5
- Digit sum
- 9
- Digital root
- 9
Representations
- Decimal
- 4320
- Scientific notation
- 4.320 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 0 0 0 1 1 1 0 0 0 0 0
1 × 4,096 + 0 × 2,048 + 0 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 4,320
Octal
1 0 3 4 0
1 × 4,096 + 0 × 512 + 3 × 64 + 4 × 8 + 0 × 1 = 4,320
Hexadecimal
1 0 e 0
1 × 4,096 + 0 × 256 + e × 16 + 0 × 1 = 4,320
Read as powers of two: 4,096 + 128 + 64 + 32 = 4,320.
In historical numeral systems
Egyptian
4 lotuses, 3 coils of rope, 2 hobbles
4 × 1,000 + 3 × 100 + 2 × 10 = 4,320. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
8K is twice 4K in each direction and four times 1080p, so one 8K frame holds sixteen 1080p frames. At normal viewing distances most of that detail is beyond visual acuity.
View 2160 →Mathematically related
- is a multiple of2160
why?
Strength 0.50, confidence "high".
Technology & computing
8K is sixteen times the pixel count of 1080p. At typical living-room distances the additional detail exceeds human visual acuity, which is why the format has advanced more slowly than earlier resolution steps.
DocumentedTechnology & computing
Common questions
Is 4320 a prime number?
No, 4320 is not prime.
What are the factors of 4320?
The factors of 4320 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 216, 240, 270, 288, 360, 432, 480, 540, 720, 864, 1080, 1440, 2160, 4320.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026