21489028187940

Names of 21489028187940

• Cardinal: 21489028187940 can be written as Twenty-one trillion, four hundred eighty-nine billion, twenty-eight million, one hundred eighty-seven thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.148902818794 × 10¹³

Factors of 21489028187940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1411

Divisors of 21489028187940

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 36 37 43 45 60 74 86 90 111 129 148 172 180 185 215 222 258 333 370 387 430 444 516 555 645 666 740 774 860 1110 1290 1321 1332 1548 1591 1665 1849 1935 2220 2580 2642 3182 3330 3698 3870 3963 4773 5284 5547 6364 6605 6660 7396 7740 7926 7955 9245 9546 11094 11889 13210 14319 15852 15910 16641 18490 19092 19815 22188 23778 23865 26420 27735 28638 31820 33282 36980 39630 47556 47730 48877 55470 56803 57276 59445 66564 68413 71595 79260 83205 95460 97754 110940 113606 118890 136826 143190 146631 166410 170409 195508 205239 227212 237780 244385 273652 284015 286380 293262 332820 340818 342065 410478 439893 488770 511227 568030 586524 615717 681636 684130 733155 820956 852045 879786 977540 1022454 1026195 1136060 1231434 1368260 1466310 1704090 1745041 1759572 2044908 2052390 2101711 2199465 2442529 2462868 2556135 2932620 3078585 3408180 3490082 4104780 4203422 4398930 4885058 5112270 5235123 6157170 6305133 6980164 7327587 8406844 8725205 8797860 9770116 10224540 10470246 10508555 12212645 12314340 12610266 14655174 15705369 17450410 18915399 20940492 21017110 21982761 24425290 25220532 26175615 29310348 31410738 31525665 34900820 36637935 37830798 42034220 43965522 48850580 52351230 62821476 63051330 64566517 73275870 75036763 75661596 78526845 87931044 90373573 94576995 104702460 109913805 126102660 129133034 146551740 150073526 157053690 180747146 189153990 193699551 219827610 225110289 258266068 271120719 300147052 314107380 322832585 361494292 375183815 378307980 387399102 439655220 450220578 451867865 542241438 581098653 645665170 675330867 750367630 774798204 813362157 900441156 903735730 968497755 1084482876 1125551445 1162197306 1291330340 1350661734 1355603595 1500735260 1626724314 1807471460 1936995510 2251102890 2324394612 2701323468 2711207190 2776360231 2905493265 3226580809 3253448628 3376654335 3873991020 4066810785 4502205780 5422414380 5552720462 5810986530 6453161618 6753308670 8133621570 8329080693 9679742427 11105440924 11621973060 12906323236 13506617340 13881801155 16132904045 16267243140 16658161386 19359484854 24987242079 27763602310 29039227281 32265808090 33316322772 38718969708 41645403465 48398712135 49974484158 55527204620 58078454562 64531616180 83290806930 96797424270 99948968316 116156909124 119383489933 124936210395 145196136405 166581613860 193594848540 238766979866 249872420790 290392272810 358150469799 477533959732 499744841580 580784545620 596917449665 716300939598 1074451409397 1193834899330 1432601879196 1790752348995 2148902818794 2387669798660 3581504697990 4297805637588 5372257046985 7163009395980 10744514093970 21489028187940
• Sum of all divisors σ(n): 68590090318932
• Sum of proper divisors (its aliquot sum) s(n): 47101062130992
• 21489028187940 is an abundant number, because the sum of its proper divisors (47101062130992) is greater than itself. Its abundance is 25612033943052

Bases of 21489028187940

• Binary: 100111000101101001101111001000100011100100100₂
• Hexadecimal: 0x138B4DE44724
• Base-36: 7M7X8JWH0

Squares and roots of 21489028187940

• 21489028187940 squared (21489028187940²) is 461778332462079879961443600
• 21489028187940 cubed (21489028187940³) is 9923167602857563281651393080774510184000
• The square root of 21489028187940 is 4635625.9758461963
• The cube root of 21489028187940 is 27801.7579879341

Scales and comparisons

• 21,489,028,187,940 seconds is equal to 683,284 years, 32 weeks, 4 days, 39 minutes.
• To count from 1 to 21,489,028,187,940 would take you about one million, seven hundred eight thousand, two hundred eleven 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 21489028187940 cubic inches would be around 2316.8 feet tall.

Recreational maths with 21489028187940

• 21489028187940 backwards is 04978182098412
• The number of decimal digits it has is: 14
• The sum of 21489028187940's digits is 63
• More coming soon!