21641391800

Names of 21641391800

• Cardinal: 21641391800 can be written as Twenty-one billion, six hundred forty-one million, three hundred ninety-one thousand, eight hundred.

Scientific notation

• Scientific notation: 2.16413918 × 10¹⁰

Factors of 21641391800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1013

Divisors of 21641391800

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 103 140 175 200 206 223 280 350 412 446 515 673 700 721 824 892 1030 1115 1346 1400 1442 1561 1784 2060 2230 2575 2692 2884 3122 3365 3605 4120 4460 4711 5150 5384 5575 5768 6244 6730 7210 7805 8920 9422 10300 11150 12488 13460 14420 15610 16825 18025 18844 20600 22300 22969 23555 26920 28840 31220 33650 36050 37688 39025 44600 45938 47110 62440 67300 69319 72100 78050 91876 94220 114845 117775 134600 138638 144200 150079 156100 160783 183752 188440 229690 235550 277276 300158 312200 321566 346595 459380 471100 485233 554552 574225 600316 643132 693190 750395 803915 918760 942200 970466 1050553 1148450 1200632 1286264 1386380 1500790 1607830 1732975 1940932 2101106 2296900 2426165 2772760 3001580 3215660 3465950 3751975 3881864 4019575 4202212 4593800 4852330 5252765 6003160 6431320 6931900 7503950 8039150 8404424 9704660 10505530 12130825 13863800 15007900 15458137 16078300 19409320 21011060 24261650 26263825 30015800 30916274 32156600 42022120 48523300 52527650 61832548 77290685 97046600 105055300 108206959 123665096 154581370 210110600 216413918 309162740 386453425 432827836 541034795 618325480 772906850 865655672 1082069590 1545813700 2164139180 2705173975 3091627400 4328278360 5410347950 10820695900 21641391800
• Sum of all divisors σ(n): 58409594880
• Sum of proper divisors (its aliquot sum) s(n): 36768203080
• 21641391800 is an abundant number, because the sum of its proper divisors (36768203080) is greater than itself. Its abundance is 15126811280

Bases of 21641391800

• Binary: 10100001001111011010110111010111000₂
• Hexadecimal: 0x509ED6EB8
• Base-36: 9XWQ4S8

Squares and roots of 21641391800

• 21641391800 squared (21641391800²) is 468349839041107240000
• 21641391800 cubed (21641391800³) is 10135742366155538086656632000000
• The square root of 21641391800 is 147110.1349329815
• The cube root of 21641391800 is 2786.7310883693

Scales and comparisons

• 21,641,391,800 seconds is equal to 688 years, 6 weeks, 5 days, 1 hour, 43 minutes, 20 seconds.
• To count from 1 to 21,641,391,800 would take you about one thousand, three hundred seventy-six 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 21641391800 cubic inches would be around 232.2 feet tall.

Recreational maths with 21641391800

• 21641391800 backwards is 00819314612
• 21641391800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21641391800's digits is 35
• More coming soon!