3812
The YM3812 is the OPL2 chip of the AdLib and Sound Blaster cards.
- Even
- Composite
Where 3812 fits
Why 3812 is special
It is why PC games of the early 1990s sound the way they do, and why 'Sound Blaster compatible' was a purchasing requirement for a decade.
Factors & digit properties
- Divisors (6)
- 1, 2, 4, 953, 1906, 3812
- Prime factorisation
- 2^2 × 953
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 3812
- Scientific notation
- 3.812 × 10^3
Roman numerals
M M M D C C C X I I
Binary
1 1 1 0 1 1 1 0 0 1 0 0
1 × 2,048 + 1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 3,812
Octal
7 3 4 4
7 × 512 + 3 × 64 + 4 × 8 + 4 × 1 = 3,812
Hexadecimal
e e 4
e × 256 + e × 16 + 4 × 1 = 3,812
Read as powers of two: 2,048 + 1,024 + 512 + 128 + 64 + 32 + 4 = 3,812.
In historical numeral systems
Egyptian
3 lotuses, 8 coils of rope, 1 hobble, 2 strokes
3 × 1,000 + 8 × 100 + 1 × 10 + 2 × 1 = 3,812. 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
- Deficient number
Related numbers & connections
Three square waves against nine FM channels is the gap between the two dominant sound approaches of the 1980s.
View 8910 →Media & popular culture
The YM3812 provides nine FM channels and was used on the AdLib card and Sound Blaster. Compatibility with it became a de facto requirement for PC sound hardware.
DocumentedMedia & popular culturePeriod: 1985–
Common questions
Is 3812 a prime number?
No, 3812 is not prime.
What are the factors of 3812?
The factors of 3812 are 1, 2, 4, 953, 1906, 3812.
What is 3812 in Roman numerals?
3812 in Roman numerals is MMMDCCCXII.
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