920
E920 is L-cysteine, a dough conditioner.
- Even
- Composite
Where 920 fits
Why 920 is special
It can be produced from human hair or poultry feathers as well as by fermentation, and the label does not distinguish between them.
Factors & digit properties
- Divisors (16)
- 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920
- Prime factorisation
- 2^3 × 5 × 23
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 920
- Binary
- 1110011000
- Octal
- 1630
- Hexadecimal
- 398
- Roman numeral
- CMXX
- Scientific notation
- 9.200 × 10^2
Other mathematical patterns
- Abundant number
Related numbers & connections
Both are additives whose permitted sources include material most consumers would not associate with food.
View 570 →Other connections
- is associated with570
why?
Strength 0.50, confidence "high".
Everyday life
E920 L-cysteine is used to relax dough in bread making. It may be produced by microbial fermentation or by hydrolysis of keratin from hair or feathers, which the additive number does not distinguish.
DocumentedEveryday lifeGeography: European Union and states adopting the E number systemPeriod: 1962–
Common questions
Is 920 a prime number?
No, 920 is not prime.
What are the factors of 920?
The factors of 920 are 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920.
What is 920 in Roman numerals?
920 in Roman numerals is CMXX.
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