48
48 is the atomic number of cadmium, and the number of US states in the contiguous United States.
- Even
- Composite
Where 48 fits
Why 48 is special
48's highly divisible mathematical profile (10 divisors) pairs with a specific geographic fact: it's two short of the full 50 US states, excluding Alaska and Hawaii.
Same number, different meanings
How 48 is understood across different contexts — never implying one meaning because of another.
- Mathematics
48's highly divisible mathematical profile (10 divisors) pairs with a specific geographic fact: it's two short of the full 50 US states, excluding Alaska and Hawaii.
- Science
48 is the atomic number of cadmium.
- Geography
The 48 contiguous United States are the US states located on the North American mainland, excluding Alaska and Hawaii.
Factors & digit properties
- Divisors (10)
- 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
- Prime factorisation
- 2^4 × 3
- Digit sum
- 12
- Digital root
- 3
Representations
- Decimal
- 48
- Binary
- 110000
- Octal
- 60
- Hexadecimal
- 30
- Roman numeral
- XLVIII
- Scientific notation
- 4.800 × 10^1
Other mathematical patterns
- Abundant number
- Highly composite number
- Harshad (Niven) number
Related numbers & connections
24 is a factor of 48 (24 × 2 = 48).
View 24 →Science
48 is the atomic number of cadmium.
DocumentedScience
Geography
The 48 contiguous United States are the US states located on the North American mainland, excluding Alaska and Hawaii.
DocumentedGeographyGeography: United States
Common questions
Is 48 a prime number?
No, 48 is not prime.
What are the factors of 48?
The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 48.
What is 48 in Roman numerals?
48 in Roman numerals is XLVIII.
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