380
+380 is the international calling code for Ukraine.
- Even
- Composite
Where 380 fits
Why 380 is special
Codes beginning 38 were allocated to south-eastern Europe, and several were reassigned as states dissolved and formed. Ukraine's +380 dates from the breakup of the Soviet Union, which had used +7 across its territory.
Same number, different meanings
How 380 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Codes beginning 38 were allocated to south-eastern Europe, and several were reassigned as states dissolved and formed. Ukraine's +380 dates from the breakup of the Soviet Union, which had used +7 across its territory.
- Law & regulation
The Edict of Thessalonica in 380 made a specific form of Christianity compulsory, which is a different act from the toleration granted in 313. Dissenting Christians became heretics by statute.
- Geography
+380 reaches Ukraine and dates from the dissolution of the Soviet Union, which had used +7 across its whole territory. Several 38x codes were reassigned as states in south-eastern Europe dissolved and formed.
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380
- Prime factorisation
- 2^2 × 5 × 19
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 380
- Scientific notation
- 3.800 × 10^2
Roman numerals
C C C L X X X
Binary
1 0 1 1 1 1 1 0 0
1 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 380
Octal
5 7 4
5 × 64 + 7 × 8 + 4 × 1 = 380
Hexadecimal
1 7 c
1 × 256 + 7 × 16 + c × 1 = 380
Read as powers of two: 256 + 64 + 32 + 16 + 8 + 4 = 380.
In historical numeral systems
Egyptian
3 coils of rope, 8 hobbles
3 × 100 + 8 × 10 = 380. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
6 vertical wedges (sixties place), 2 corner wedges (units place)
6 × 60 + 20 = 380. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
tau, then pi, marked as a numeral
tau-pi + keraia
tau + pi written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
shin, then pe
shin-pe
shin (300) + pe (80) = 380, written in descending order.
Maya
3 bars + 4 dots (upper, twenties place) over shell (zero) (lower, units place)
19 × 20 + 0 = 380. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
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
Related numbers & connections
Belarus and Ukraine share a border and both were assigned codes on the dissolution of the Soviet Union. Belarus is the only country in Europe still carrying out executions.
View 375 →Ukraine's +380 dates from the dissolution of the Soviet Union, which had used +7 across its entire territory.
View 7 →Law & regulation
The Edict of Thessalonica in 380 made a specific form of Christianity compulsory, which is a different act from the toleration granted in 313. Dissenting Christians became heretics by statute.
DocumentedLaw & regulationGeography: Roman EmpirePeriod: 380
Geography
+380 reaches Ukraine and dates from the dissolution of the Soviet Union, which had used +7 across its whole territory. Several 38x codes were reassigned as states in south-eastern Europe dissolved and formed.
DocumentedGeographyGeography: Ukraine
Common questions
Is 380 a prime number?
No, 380 is not prime.
What are the factors of 380?
The factors of 380 are 1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380.
What is 380 in Roman numerals?
380 in Roman numerals is CCCLXXX.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026