255990

Names of 255990

• Cardinal: 255990 can be written as Two hundred fifty-five thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.5599 × 10⁵

Factors of 255990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 93

Divisors of 255990

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 23 30 35 42 46 53 69 70 105 106 115 138 159 161 210 230 265 318 322 345 371 483 530 690 742 795 805 966 1113 1219 1590 1610 1855 2226 2415 2438 3657 3710 4830 5565 6095 7314 8533 11130 12190 17066 18285 25599 36570 42665 51198 85330 127995 255990
• Sum of all divisors σ(n): 746496
• Sum of proper divisors (its aliquot sum) s(n): 490506
• 255990 is an abundant number, because the sum of its proper divisors (490506) is greater than itself. Its abundance is 234516

Bases of 255990

• Binary: 111110011111110110₂
• Hexadecimal: 0x3E7F6
• Base-36: 5HIU

Squares and roots of 255990

• 255990 squared (255990²) is 65530880100
• 255990 cubed (255990³) is 16775249996799000
• The square root of 255990 is 505.9545434127
• The cube root of 255990 is 63.4952152963

Scales and comparisons

• 255,990 seconds is equal to 2 days, 23 hours, 6 minutes, 30 seconds.
• To count from 1 to 255,990 would take you about two days.

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 255990 cubic inches would be around 5.3 feet tall.

Recreational maths with 255990

• 255990 backwards is 099552
• 255990 is a Harshad number.
• The number of decimal digits it has is: 6
• The sum of 255990's digits is 30
• More coming soon!