268 (number)

← 267 268 269 →
← 260 261 262 263 264 265 266 267 268 269 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred sixty-eight
Ordinal	268th (two hundred sixty-eighth)
Factorization	22 × 67
Divisors	1, 2, 4, 67, 134, 268
Greek numeral	ΣΞΗ´
Roman numeral	CCLXVIII, cclxviii
Binary	1000011002
Ternary	1002213
Senary	11246
Octal	4148
Duodecimal	1A412
Hexadecimal	10C16

268 (two hundred [and] sixty-eight) is the natural number following 267 and preceding 269.

In mathematics

• 268 is an even composite number with two prime factors, ^[1] but one of the prime factors is repeated: 268 = 67*2*2.
• 268 is the smallest number whose product of digits is 6 times the sum of its digits.
• 268 is untouchable which means that it is not the sum of the proper divisors of any number ^[2]
• 268 is the sum of the consecutive primes 131 and 137. ^[3]

References

1. "Facts about the integer". mathworld.wolfram.com.
2. "Untouchable numbers". mathworld.wolfram.com.
3. "Twin prime numbers". mathworld.wolfram.com.