Numberwise

856

+856 is the international calling code for Laos.

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Where 856 fits

Where 856 fits: Related numbersRelated numbers: 855.Related numbers855856
856 connects to 1 world: related numbers.

Why 856 is special

Laos is the only landlocked country in Southeast Asia and is the most heavily bombed country per capita in history.

Factors & digit properties

Divisors (8)
1, 2, 4, 8, 107, 214, 428, 856
Prime factorisation
2^3 × 107
Digit sum
19
Digital root
1

Representations

Decimal
856
Binary
1101011000
Octal
1530
Hexadecimal
358
Roman numeral
DCCCLVI
Scientific notation
8.560 × 10^2

Other mathematical patterns

  • Deficient number

Related numbers & connections

Mathematical relationship
Cambodia and Laos are neighbours whose modern infrastructure was shaped by the same conflict. Laos is the most heavily bombed country per capita in history.

Cambodia and Laos are neighbours whose modern infrastructure was shaped by the same conflict. Laos is the most heavily bombed country per capita in history.

View 855 →

Nearby in a sequence

  • is adjacent to855
    why?

    Strength 0.50, confidence "high".

How is 856 connected to another number? →

Geography

  • +856 reaches Laos, the only landlocked state in Southeast Asia. More ordnance was dropped on it between 1964 and 1973 than on Germany and Japan combined in the Second World War.

    DocumentedGeographyGeography: Laos

Common questions

Is 856 a prime number?

No, 856 is not prime.

What are the factors of 856?

The factors of 856 are 1, 2, 4, 8, 107, 214, 428, 856.

What is 856 in Roman numerals?

856 in Roman numerals is DCCCLVI.

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