20917162890

Names of 20917162890

• Cardinal: 20917162890 can be written as Twenty billion, nine hundred seventeen million, one hundred sixty-two thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.091716289 × 10¹⁰

Factors of 20917162890

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 439

Divisors of 20917162890

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 19 26 30 31 38 39 45 57 62 65 78 90 93 95 114 117 127 130 155 171 186 190 195 234 239 247 254 279 285 310 342 381 390 403 465 478 494 558 570 585 589 635 717 741 762 806 855 930 1143 1170 1178 1195 1209 1235 1270 1395 1434 1482 1651 1710 1767 1905 2015 2151 2223 2286 2390 2413 2418 2470 2790 2945 3107 3302 3534 3585 3627 3705 3810 3937 4030 4302 4446 4541 4826 4953 5301 5715 5890 6045 6214 7170 7239 7254 7409 7410 7657 7874 8255 8835 9082 9321 9906 10602 10755 11115 11430 11811 12065 12090 13623 14478 14818 14859 15314 15535 16510 17670 18135 18642 19685 21510 21717 22227 22230 22705 22971 23622 24130 24765 26505 27246 27963 29718 30353 31070 31369 35433 36195 36270 37045 38285 39370 40869 43434 44454 45410 45942 46605 49530 51181 53010 55926 59033 59055 60706 62738 66681 68115 68913 70866 72390 74090 74295 74803 76570 81738 91059 93210 94107 96317 102362 108585 111135 114855 118066 118110 133362 136230 137826 139815 140771 148590 149606 151765 153543 156845 177099 177165 182118 188214 192634 204345 217170 222270 224409 229710 255905 273177 279630 281542 282321 288951 295165 303530 307086 313690 333405 344565 354198 354330 374015 394589 408690 422313 448818 455295 460629 470535 481585 511810 531297 546354 564642 576707 577902 590330 666810 673227 689130 703855 748030 767715 789178 844626 866853 885495 910590 921258 940943 941070 963170 972439 1062594 1122045 1153414 1183767 1266939 1346454 1365885 1407710 1411605 1444755 1535430 1730121 1733706 1770990 1830023 1881886 1944878 1972945 2111565 2244090 2303145 2367534 2533878 2656485 2731770 2822829 2823210 2883535 2889510 2917317 3366135 3460242 3551301 3660046 3945890 4223130 4334265 4606290 4704715 4862195 5190363 5312970 5490069 5645658 5767070 5834634 5918835 6334695 6732270 7102602 7497191 8468487 8650605 8668530 8751951 9150115 9409430 9724390 10380726 10980138 11837670 12232259 12669390 14114145 14586585 14994382 16470207 16936974 17301210 17503902 17756505 17877917 18300230 22491573 24464518 25951815 27450345 28228290 29173170 32940414 35513010 35755834 36696777 37485955 42342435 43759755 44983146 51903630 53633751 54900690 61161295 67474719 73393554 74971910 82351035 84684870 87519510 89389585 107267502 110090331 112457865 122322590 134949438 160901253 164702070 178779170 183483885 220180662 224915730 232412921 268168755 321802506 337373595 366967770 464825842 536337510 550451655 674747190 697238763 804506265 1100903310 1162064605 1394477526 1609012530 2091716289 2324129210 3486193815 4183432578 6972387630 10458581445 20917162890
• Sum of all divisors σ(n): 64408780800
• Sum of proper divisors (its aliquot sum) s(n): 43491617910
• 20917162890 is an abundant number, because the sum of its proper divisors (43491617910) is greater than itself. Its abundance is 22574455020

Bases of 20917162890

• Binary: 10011011110110000101001001110001010₂
• Hexadecimal: 0x4DEC2938A
• Base-36: 9LXJE6I

Squares and roots of 20917162890

• 20917162890 squared (20917162890²) is 437527703366793152100
• 20917162890 cubed (20917162890³) is 9151838240210813779412245569000
• The square root of 20917162890 is 144627.6698629967
• The cube root of 20917162890 is 2755.2917562389

Scales and comparisons

• 20,917,162,890 seconds is equal to 665 years, 5 weeks, 1 day, 19 hours, 1 minute, 30 seconds.
• To count from 1 to 20,917,162,890 would take you about one thousand, three hundred thirty 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 20917162890 cubic inches would be around 229.6 feet tall.

Recreational maths with 20917162890

• 20917162890 backwards is 09826171902
• 20917162890 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20917162890's digits is 45
• More coming soon!