1620
1620 is the year the Mayflower reached North America.
- Even
- Composite
Where 1620 fits
Why 1620 is special
About half the passengers died in the first winter. The Mayflower Compact, signed aboard, is often described as an early self-government document, though it was written to hold a fractious group together rather than to found anything.
Factors & digit properties
- Divisors (30)
- 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620
- Prime factorisation
- 2^2 × 3^4 × 5
- Digit sum
- 9
- Digital root
- 9
Representations
- Decimal
- 1620
- Binary
- 11001010100
- Octal
- 3124
- Hexadecimal
- 654
- Roman numeral
- MDCXX
- Scientific notation
- 1.620 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
The Mayflower arrived in 1620 and the harvest gathering now called the first Thanksgiving followed in 1621, documented in a single short letter.
View 1621 →Other connections
- is associated with1621
why?
Strength 0.50, confidence "high".
History
The Mayflower Compact is regularly presented as a founding charter of American self-government. It was drafted because passengers landing outside their patent's jurisdiction were threatening to go their own way, and its purpose was to bind them, not to innovate constitutionally.
DocumentedHistoryGeography: Massachusetts, North AmericaPeriod: 1620
Common questions
Is 1620 a prime number?
No, 1620 is not prime.
What are the factors of 1620?
The factors of 1620 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620.
What is 1620 in Roman numerals?
1620 in Roman numerals is MDCXX.
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