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Numbers / 218

The Number 218

218 is composite: factorization 2 × 109. That gives 218 exactly 4 divisors: 1, 2, 109, 218. 218's proper divisors total just 112, 106 short of 218, the deficient case most of 218's neighbors share too. 218 has a digit sum of 11; for 218, the digital root works out to 2. 218: 2 all divide 218 evenly, out of 2-12. 218 is 11011010 in binary and DA in hex; as a Roman numeral it's CCXVIII.

Factors
1, 2, 109, 218
Number of factors
4
Prime?
No
Prime factorization
2 x 109
Even or odd
Even
Square
47524
Cube
10360232
Binary
11011010
Hexadecimal
DA
Roman numeral
CCXVIII
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Factors of 218 in detail →Is 218 prime? →