7,680
7,680 is the pixel width of 8K UHD — twice 4K, and four times 1080p.
- Even
- Composite
Why 7,680 is special
The doubling chain is the whole design: each step keeps the previous format an exact quarter of the new one, so older material scales without interpolation. Whether the resolution is visible at ordinary viewing distances is a separate and much more contested question.
Factors & digit properties
- Divisors (40)
- 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 3840, 7680
- Prime factorisation
- 2^9 × 3 × 5
- Digit sum
- 21
- Digital root
- 3
Representations
- Decimal
- 7680
- Scientific notation
- 7.680 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 1 1 0 0 0 0 0 0 0 0 0
1 × 4,096 + 1 × 2,048 + 1 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 7,680
Octal
1 7 0 0 0
1 × 4,096 + 7 × 512 + 0 × 64 + 0 × 8 + 0 × 1 = 7,680
Hexadecimal
1 e 0 0
1 × 4,096 + e × 256 + 0 × 16 + 0 × 1 = 7,680
Read as powers of two: 4,096 + 2,048 + 1,024 + 512 = 7,680.
In historical numeral systems
Egyptian
7 lotuses, 6 coils of rope, 8 hobbles
7 × 1,000 + 6 × 100 + 8 × 10 = 7,680. 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
Technology & computing
The pixel width of an 8K UHD frame is 7680 (worldwide, ITU-R BT.2020). 33,177,600 pixels in total. At 60 frames a second and ten bits a channel that is roughly 48 gigabits a second uncompressed, which is most of why HDMI 2.1 exists.
DocumentedTechnology & computingGeography: worldwide, ITU-R BT.2020
Common questions
Is 7,680 a prime number?
No, 7,680 is not prime.
What are the factors of 7,680?
The factors of 7,680 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 3840, 7680.
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