21012689880

Names of 21012689880

• Cardinal: 21012689880 can be written as Twenty-one billion, twelve million, six hundred eighty-nine thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.101268988 × 10¹⁰

Factors of 21012689880

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 641443

Divisors of 21012689880

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 18 20 21 24 26 28 30 35 36 39 40 42 45 52 56 60 63 65 70 72 78 84 90 91 104 105 117 120 126 130 140 156 168 180 182 195 210 234 252 260 273 280 312 315 360 364 390 420 455 468 504 520 546 585 630 728 780 819 840 910 936 1092 1170 1260 1365 1560 1638 1820 2184 2340 2520 2730 3276 3640 4095 4680 5460 6552 8190 10920 16380 32760 641413 1282826 1924239 2565652 3207065 3848478 4489891 5131304 5772717 6414130 7696956 8338369 8979782 9621195 11545434 12828260 13469673 15393912 16676738 17959564 19242390 22449455 23090868 25015107 25656520 26939346 28863585 33353476 35919128 38484780 40409019 41691845 44898910 46181736 50030214 53878692 57727170 58368583 66706952 67348365 75045321 76969560 80818038 83383690 89797820 100060428 107757384 115454340 116737166 125075535 134696730 150090642 161636076 166767380 175105749 179595640 200120856 202045095 230908680 233474332 250151070 269393460 291842915 300181284 323272152 333534760 350211498 375226605 404090190 466948664 500302140 525317247 538786920 583685830 600362568 700422996 750453210 808180380 875528745 1000604280 1050634494 1167371660 1400845992 1500906420 1616360760 1751057490 2101268988 2334743320 2626586235 3001812840 3502114980 4202537976 5253172470 7004229960 10506344940 21012689880
• Sum of all divisors σ(n): 84050890560
• Sum of proper divisors (its aliquot sum) s(n): 63038200680
• 21012689880 is an abundant number, because the sum of its proper divisors (63038200680) is greater than itself. Its abundance is 42025510800

Bases of 21012689880

• Binary: 10011100100011101000011001111011000₂
• Hexadecimal: 0x4E47433D8
• Base-36: 9NIEVA0

Squares and roots of 21012689880

• 21012689880 squared (21012689880²) is 441533135993054414400
• 21012689880 cubed (21012689880³) is 9277798858365918243752206272000
• The square root of 21012689880 is 144957.5450951071
• The cube root of 21012689880 is 2759.4797853821

Scales and comparisons

• 21,012,689,880 seconds is equal to 668 years, 7 weeks, 1 day, 10 hours, 18 minutes.
• To count from 1 to 21,012,689,880 would take you about one thousand, three hundred thirty-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 21012689880 cubic inches would be around 230 feet tall.

Recreational maths with 21012689880

• 21012689880 backwards is 08898621012
• 21012689880 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21012689880's digits is 45
• More coming soon!