720
720 is 6 factorial, and the number of degrees in two full turns.
- Even
- Composite
Where 720 fits
Why 720 is special
720 is where a rotation stops being a direction and becomes a trick. In skateboarding and freestyle skiing a 720 is two complete revolutions, and the naming convention only works because 360 was already understood as one. It is also 6! — the number of ways six objects can be arranged — and the sum of the interior angles of any hexagon.
Factors & digit properties
- Divisors (30)
- 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
- Prime factorisation
- 2^4 × 3^2 × 5
- Digit sum
- 9
- Digital root
- 9
Representations
- Decimal
- 720
- Binary
- 1011010000
- Octal
- 1320
- Hexadecimal
- 2d0
- Roman numeral
- DCCXX
- Scientific notation
- 7.200 × 10^2
Other mathematical patterns
- Abundant number
- Factorial number
- Highly composite number
- Harshad (Niven) number
Related numbers & connections
Two full turns. Aerial sports name tricks in degrees, so a 720 is two rotations and a 1080 three — a naming system borrowed wholesale from geometry rather than invented for sport.
View 360 →Consecutive factorials, 6! and 7!. Each is the number of ways to arrange that many distinct objects, and the jump between them — 720 to 5,040 — is the point where factorial growth starts to feel unreasonable.
View 5040 →Sport
Aerial tricks are named in degrees, so a 720 is two complete revolutions and a 1080 is three. The convention only makes sense because 360 was already the shared vocabulary for a full turn — the sports borrowed a geometric unit rather than inventing a counting system, which is why the numbers get large quickly.
DocumentedSport
Common questions
Is 720 a prime number?
No, 720 is not prime.
What are the factors of 720?
The factors of 720 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720.
What is 720 in Roman numerals?
720 in Roman numerals is DCCXX.
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