98
98 is the atomic number of californium, used as a compact neutron source including to help start some nuclear reactors.
- Even
- Composite
Where 98 fits
Why 98 is special
98's element does real practical work in nuclear engineering, despite being one of the heaviest and rarest elements ever produced.
Same number, different meanings
How 98 is understood across different contexts — never implying one meaning because of another.
- Mathematics
98's element does real practical work in nuclear engineering, despite being one of the heaviest and rarest elements ever produced.
- Science
98 is the atomic number of californium.
- Technology & computing
Californium-252 is used as a compact neutron source, including to help start up some nuclear reactors and in certain neutron-based inspection equipment.
Factors & digit properties
- Divisors (6)
- 1, 2, 7, 14, 49, 98
- Prime factorisation
- 2 × 7^2
- Digit sum
- 17
- Digital root
- 8
Representations
- Decimal
- 98
- Binary
- 1100010
- Octal
- 142
- Hexadecimal
- 62
- Roman numeral
- XCVIII
- Scientific notation
- 9.800 × 10^1
Other mathematical patterns
- Deficient number
Related numbers & connections
49 is a factor of 98 (49 × 2 = 98).
View 49 →Mathematically related
- has factor49
why?
Strength 0.50, confidence "high".
Science
98 is the atomic number of californium.
DocumentedScience
Technology & computing
Californium-252 is used as a compact neutron source, including to help start up some nuclear reactors and in certain neutron-based inspection equipment.
DocumentedTechnology & computing
Common questions
Is 98 a prime number?
No, 98 is not prime.
What are the factors of 98?
The factors of 98 are 1, 2, 7, 14, 49, 98.
What is 98 in Roman numerals?
98 in Roman numerals is XCVIII.
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