21307920578490

Names of 21307920578490

• Cardinal: 21307920578490 can be written as Twenty-one trillion, three hundred seven billion, nine hundred twenty million, five hundred seventy-eight thousand, four hundred ninety.

Scientific notation

• Scientific notation: 2.130792057849 × 10¹³

Factors of 21307920578490

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 429430

Divisors of 21307920578490

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 49 53 65 70 78 91 98 105 106 130 147 159 182 195 210 245 265 273 294 318 343 371 390 455 490 530 546 637 686 689 735 742 795 910 1029 1113 1274 1365 1378 1470 1590 1715 1855 1911 2058 2067 2226 2401 2597 2730 3185 3430 3445 3710 3822 4134 4459 4802 4823 5145 5194 5565 6370 6890 7203 7791 8918 9555 9646 10290 10335 11130 12005 12985 13377 14406 14469 15582 18179 19110 20670 22295 24010 24115 25970 26754 28938 31213 33761 36015 36358 38955 44590 48230 54537 62426 66885 67522 72030 72345 77910 90895 93639 101283 109074 127253 133770 144690 156065 168805 181790 187278 202566 236327 254506 272685 312130 337610 381759 429347 468195 472654 506415 545370 636265 708981 763518 858694 936390 1012830 1181635 1272530 1288041 1417962 1654289 1908795 2146735 2363270 2576082 3005429 3308578 3544905 3817590 4293470 4962867 5581511 6010858 6440205 7089810 8271445 9016287 9925734 11163022 12880410 15027145 16542890 16744533 18032574 21038003 22755391 24814335 27907555 30054290 33489066 39070577 42076006 45081435 45510782 49628670 55815110 63114009 68266173 78141154 83722665 90162870 105190015 113776955 117211731 126228018 136532346 147266021 159287737 167445330 195352885 210380030 227553910 234423462 273494039 294532042 295820083 315570045 318575474 341330865 390705770 441798063 477863211 546988078 586058655 591640166 631140090 682661730 736330105 796438685 820482117 883596126 887460249 955726422 1030862147 1115014159 1172117310 1367470195 1472660210 1479100415 1592877370 1640964234 1774920498 1914458273 2061724294 2070740581 2208990315 2230028318 2389316055 2734940390 2958200830 3092586441 3345042477 3828916546 4102410585 4141481162 4417980630 4437301245 4778632110 5154310735 5575070795 5743374819 6185172882 6212221743 6690084954 7805099113 8204821170 8874602490 9572291365 10308621470 10353702905 11150141590 11486749638 12424443486 13401207911 14495184067 15462932205 15610198226 16725212385 19144582730 20707405810 23415297339 26802415822 28716874095 28990368134 30925864410 31061108715 33450424770 39025495565 40203623733 43485552201 46830594678 54635693791 57433748190 62122217430 67006039555 72475920335 78050991130 80407247466 86971104402 101466288469 109271387582 117076486695 134012079110 144951840670 163907081373 201018118665 202932576938 217427761005 234152973390 273178468955 304398865407 327814162746 402036237330 434855522010 507331442345 546356937910 608797730814 710264019283 819535406865 1014662884690 1420528038566 1521994327035 1639070813730 2130792057849 3043988654070 3551320096415 4261584115698 7102640192830 10653960289245 21307920578490
• Sum of all divisors σ(n): 65460127211136
• Sum of proper divisors (its aliquot sum) s(n): 44152206632646
• 21307920578490 is an abundant number, because the sum of its proper divisors (44152206632646) is greater than itself. Its abundance is 22844286054156

Bases of 21307920578490

• Binary: 100110110000100100011000010010111011110111010₂
• Hexadecimal: 0x1361230977BA
• Base-36: 7JWQ1RANU

Squares and roots of 21307920578490

• 21307920578490 squared (21307920578490²) is 454027479379237616250680100
• 21307920578490 cubed (21307920578490³) is 9674381471064801334155360141247931049000
• The square root of 21307920578490 is 4616050.3223524329
• The cube root of 21307920578490 is 27723.4339607421

Scales and comparisons

• 21,307,920,578,490 seconds is equal to 677,525 years, 50 weeks, 1 day, 3 hours, 21 minutes, 30 seconds.
• To count from 1 to 21,307,920,578,490 would take you about one million, six hundred ninety-three thousand, eight hundred fourteen 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 21307920578490 cubic inches would be around 2310.3 feet tall.

Recreational maths with 21307920578490

• 21307920578490 backwards is 09487502970312
• The number of decimal digits it has is: 14
• The sum of 21307920578490's digits is 57
• More coming soon!