21073515840

Names of 21073515840

• Cardinal: 21073515840 can be written as Twenty-one billion, seventy-three million, five hundred fifteen thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.107351584 × 10¹⁰

Factors of 21073515840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1545

Divisors of 21073515840

• Number of divisors d(n): 504
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 29 30 32 36 39 40 45 48 52 58 60 64 65 72 78 80 87 90 96 104 116 117 120 130 144 145 156 160 169 174 180 192 195 208 232 234 240 260 261 288 290 312 320 338 348 360 377 390 416 435 464 468 480 507 520 522 576 580 585 624 676 696 720 754 780 832 845 870 928 936 960 1014 1040 1044 1131 1160 1170 1248 1305 1352 1392 1440 1493 1508 1521 1560 1690 1740 1856 1872 1885 2028 2080 2088 2262 2320 2340 2496 2535 2610 2704 2784 2880 2986 3016 3042 3120 3380 3393 3480 3744 3770 4056 4160 4176 4479 4524 4640 4680 4901 5070 5220 5408 5568 5655 5972 6032 6084 6240 6760 6786 6960 7465 7488 7540 7605 8112 8352 8958 9048 9280 9360 9802 10140 10440 10816 11310 11944 12064 12168 12480 13437 13520 13572 13920 14703 14930 15080 15210 16224 16704 16965 17916 18096 18720 19409 19604 20280 20880 22395 22620 23888 24128 24336 24505 26874 27040 27144 27840 29406 29860 30160 30420 32448 33930 35832 36192 37440 38818 39208 40560 41760 43297 44109 44790 45240 47776 48672 49010 53748 54080 54288 58227 58812 59720 60320 60840 67185 67860 71664 72384 73515 77636 78416 81120 83520 86594 88218 89580 90480 95552 97045 97344 98020 107496 108576 116454 117624 119440 120640 121680 129891 134370 135720 143328 147030 155272 156832 162240 173188 174681 176436 179160 180960 194090 196040 214992 216485 217152 220545 232908 235248 238880 243360 252317 259782 268740 271440 286656 291135 294060 310544 313664 346376 349362 352872 358320 361920 388180 389673 392080 429984 432970 441090 465816 470496 477760 486720 504634 519564 537480 542880 562861 582270 588120 621088 649455 692752 698724 705744 716640 756951 776360 779346 784160 859968 865940 873405 882180 931632 940992 1009268 1039128 1074960 1085760 1125722 1164540 1176240 1242176 1261585 1298910 1385504 1397448 1411488 1433280 1513902 1552720 1558692 1568320 1688583 1731880 1746810 1764360 1863264 1948365 2018536 2078256 2149920 2251444 2270853 2329080 2352480 2523170 2597820 2771008 2794896 2814305 2822976 3027804 3105440 3117384 3377166 3463760 3493620 3528720 3726528 3784755 3896730 4037072 4156512 4299840 4502888 4541706 4658160 4704960 5046340 5065749 5195640 5589792 5628610 6055608 6210880 6234768 6754332 6927520 6987240 7057440 7317193 7569510 7793460 8074144 8313024 8442915 9005776 9083412 9316320 10092680 10131498 10391280 11179584 11257220 11354265 12111216 12469536 13508664 13855040 13974480 14114880 14634386 15139020 15586920 16148288 16885830 18011552 18166824 18632640 20185360 20262996 20782560 21951579 22514440 22708530 24222432 24939072 25328745 27017328 27948960 29268772 30278040 31173840 33771660 36023104 36333648 36585965 40370720 40525992 41565120 43903158 45028880 45417060 48444864 50657490 54034656 55897920 58537544 60556080 62347680 65854737 67543320 72667296 73171930 80741440 81051984 87806316 90057760 90834120 101314980 108069312 109757895 117075088 121112160 124695360 131709474 135086640 145334592 146343860 162103968 175612632 180115520 181668240 202629960 219515790 234150176 242224320 263418948 270173280 292687720 324207936 329273685 351225264 363336480 405259920 439031580 468300352 526837896 540346560 585375440 658547370 702450528 726672960 810519840 878063160 1053675792 1170750880 1317094740 1404901056 1621039680 1756126320 2107351584 2341501760 2634189480 3512252640 4214703168 5268378960 7024505280 10536757920 21073515840
• Sum of all divisors σ(n): 81249606360
• Sum of proper divisors (its aliquot sum) s(n): 60176090520
• 21073515840 is an abundant number, because the sum of its proper divisors (60176090520) is greater than itself. Its abundance is 39102574680

Bases of 21073515840

• Binary: 10011101000000101000101010101000000₂
• Hexadecimal: 0x4E8145540
• Base-36: 9OIMKW0

Squares and roots of 21073515840

• 21073515840 squared (21073515840²) is 444093069858730905600
• 21073515840 cubed (21073515840³) is 9358602342102192301459144704000
• The square root of 21073515840 is 145167.1996010119
• The cube root of 21073515840 is 2762.1398653943

Scales and comparisons

• 21,073,515,840 seconds is equal to 670 years, 3 weeks, 5 days, 10 hours, 24 minutes.
• To count from 1 to 21,073,515,840 would take you about one thousand, three hundred forty 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 21073515840 cubic inches would be around 230.2 feet tall.

Recreational maths with 21073515840

• 21073515840 backwards is 04851537012
• 21073515840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21073515840's digits is 36
• More coming soon!