28,978
28978 Ixion is a large Kuiper belt object without a known moon.
- Even
- Composite
Where 28,978 fits
Why 28,978 is special
Its mass is therefore unmeasured, since orbiting companions are how the masses of distant bodies are usually determined.
28,978 is part of
Factors & digit properties
- Divisors (4)
- 1, 2, 14489, 28978
- Prime factorisation
- 2 × 14489
- Digit sum
- 34
- Digital root
- 7
Representations
- Decimal
- 28978
- Binary
- 111000100110010
- Octal
- 70462
- Hexadecimal
- 7132
- Scientific notation
- 2.898 × 10^4
Other mathematical patterns
- Deficient number
- Happy number
- Semiprime
Related numbers & connections
Both are large Kuiper belt objects whose physical properties remain poorly constrained.
View 50000 →Science
28978 Ixion is a plutino in 2:3 resonance with Neptune. No satellite has been detected, so its mass has not been determined dynamically.
DocumentedSciencePeriod: 2001–
Common questions
Is 28,978 a prime number?
No, 28,978 is not prime.
What are the factors of 28,978?
The factors of 28,978 are 1, 2, 14489, 28978.
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