1221868900

Names of 1221868900

• Cardinal: 1221868900 can be written as One billion, two hundred twenty-one million, eight hundred sixty-eight thousand, nine hundred.

Scientific notation

• Scientific notation: 1.2218689 × 10⁹

Factors of 1221868900

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 741

Divisors of 1221868900

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 5 7 10 14 20 25 28 35 49 50 70 98 100 140 175 196 245 343 350 490 686 700 727 980 1225 1372 1454 1715 2401 2450 2908 3430 3635 4802 4900 5089 6860 7270 8575 9604 10178 12005 14540 16807 17150 18175 20356 24010 25445 33614 34300 35623 36350 48020 50890 60025 67228 71246 72700 84035 101780 120050 127225 142492 168070 178115 240100 249361 254450 336140 356230 420175 498722 508900 712460 840350 890575 997444 1246805 1680700 1745527 1781150 2493610 3491054 3562300 4987220 6234025 6982108 8727635 12218689 12468050 17455270 24437378 24936100 34910540 43638175 48874756 61093445 87276350 122186890 174552700 244373780 305467225 610934450 1221868900
• Sum of all divisors σ(n): 3097593408
• Sum of proper divisors (its aliquot sum) s(n): 1875724508
• 1221868900 is an abundant number, because the sum of its proper divisors (1875724508) is greater than itself. Its abundance is 653855608

Bases of 1221868900

• Binary: 1001000110101000011110101100100₂
• Hexadecimal: 0x48D43D64
• Base-36: K7GW2S

Squares and roots of 1221868900

• 1221868900 squared (1221868900²) is 1492963608787210000
• 1221868900 cubed (1221868900³) is 1824205802408858616769000000
• The square root of 1221868900 is 34955.2413809431
• The cube root of 1221868900 is 1069.0750734187

Scales and comparisons

• 1,221,868,900 seconds is equal to 38 years, 44 weeks, 2 days, 1 minute, 40 seconds.
• To count from 1 to 1,221,868,900 would take you about seventy-seven years!

  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 1221868900 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221868900

• 1221868900 backwards is 0098681221
• The number of decimal digits it has is: 10
• The sum of 1221868900's digits is 37
• More coming soon!