MathQuarryCalculators

Numbers / 128

The Number 128

128 is composite: factorization 2^7. That gives 128 exactly 8 divisors: 1, 2, 4, 8, 16, 32, 64, 128. 128's proper divisors total just 127, 1 short of 128, the deficient case most of 128's neighbors share too. 128 has a digit sum of 11; for 128, the digital root works out to 2. 128: 2, 4, 8 all divide 128 evenly, out of 2-12. 128 is 10000000 in binary and 80 in hex; as a Roman numeral it's CXXVIII.

Factors
1, 2, 4, 8, 16, 32, 64, 128
Number of factors
8
Prime?
No
Prime factorization
2^7
Even or odd
Even
Square
16384
Cube
2097152
Binary
10000000
Hexadecimal
80
Roman numeral
CXXVIII
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Factors of 128 in detail →Is 128 prime? →