7812
The 7812 is a fixed twelve-volt regulator from the same family.
- Even
- Composite
Where 7812 fits
Why 7812 is special
The last two digits of a 78xx part number are its output voltage, which is an unusually honest naming scheme for a semiconductor.
Factors & digit properties
- Divisors (36)
- 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2604, 3906, 7812
- Prime factorisation
- 2^2 × 3^2 × 7 × 31
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 7812
- Binary
- 1111010000100
- Octal
- 17204
- Hexadecimal
- 1e84
- Scientific notation
- 7.812 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
The last two digits of a 78xx part are its output voltage, so the family is read directly from the number.
View 7805 →Numbers Around Us
- appears alongside7805
why?
Strength 0.50, confidence "high".
Technology & computing
The 7812 provides a regulated twelve-volt output within the 78xx series, where the final digits denote output voltage and the 79xx series provides the negative equivalents.
DocumentedTechnology & computingPeriod: 1970s–
Common questions
Is 7812 a prime number?
No, 7812 is not prime.
What are the factors of 7812?
The factors of 7812 are 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2604, 3906, 7812.
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: 3 August 2026