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Numbers / 278

The Number 278

278 is composite: factorization 2 × 139. That gives 278 exactly 4 divisors: 1, 2, 139, 278. 278's proper divisors total just 142, 136 short of 278, the deficient case most of 278's neighbors share too. 278 has a digit sum of 17; for 278, the digital root works out to 8. 278: 2 all divide 278 evenly, out of 2-12. 278 is 100010110 in binary and 116 in hex; as a Roman numeral it's CCLXXVIII.

Factors
1, 2, 139, 278
Number of factors
4
Prime?
No
Prime factorization
2 x 139
Even or odd
Even
Square
77284
Cube
21484952
Binary
100010110
Hexadecimal
116
Roman numeral
CCLXXVIII
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Factors of 278 in detail →Is 278 prime? →