99890

Names of 99890

• Cardinal: 99890 can be written as Ninety-nine thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 9.989 × 10⁴

Factors of 99890

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 1441

Divisors of 99890

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 5 7 10 14 35 70 1427 2854 7135 9989 14270 19978 49945 99890
• Sum of all divisors σ(n): 205632
• Sum of proper divisors (its aliquot sum) s(n): 105742
• 99890 is an abundant number, because the sum of its proper divisors (105742) is greater than itself. Its abundance is 5852

Bases of 99890

• Binary: 11000011000110010₂
• Hexadecimal: 0x18632
• Base-36: 252Q

Squares and roots of 99890

• 99890 squared (99890²) is 9978012100
• 99890 cubed (99890³) is 996703628669000
• The square root of 99890 is 316.0537928897
• The cube root of 99890 is 46.3988629329

Scales and comparisons

• 99,890 seconds is equal to 1 day, 3 hours, 44 minutes, 50 seconds.
• To count from 1 to 99,890 would take you about three hours.

  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 99890 cubic inches would be around 3.9 feet tall.

Recreational maths with 99890

• 99890 backwards is 09899
• 99890 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 99890's digits is 35
• More coming soon!