138
Number 138: Properties, Factors, and Mathematical Facts
Short answer
The number 138 is an even composite number with 8 positive divisors. Its prime factorization is 2 × 3 × 23. It is also an abundant number, which gives it several notable mathematical relationships.
Is 138 prime?
ClassificationCompositeParityEvenDivisor count8AbundanceAbundant
What is the prime factorization of 138?
Prime factorization
2 times 3 times 23
What are the divisors of 138?
Divisor count
8
Divisor sum
288
Proper divisor sum
150
- 1
- 2
- 3
- 6
- 23
- 46
- 69
- 138
How is 138 classified?
How is 138 represented in other numeral systems?
Decimal
138
Binary
10001010
Octal
212
Hexadecimal
Roman
CXXXVIIILearn more →
In words
one hundred thirty eight
Roots and powers
Square root
11.747340 Approximate
Cube root
5.167649 Approximate
Nearest lower square
121
Nearest higher square
144
Nearest lower cube
125
Nearest higher cube
216
What are the digit properties of 138?
Which numbers are related to 138?
Why these results are true
- 138 is composite because it has positive divisors other than 1 and itself.
- 138 is abundant because the sum of its proper divisors (150) is greater than 138.
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FAQ for 138
- Is 138 prime?
- No
- What is the prime factorization of 138?
- 2 × 3 × 23
- Is 138 a perfect square?
- No
- What is 138 in binary?
- 10001010
- What is 138 in Roman numerals?
- CXXXVIII