21457310784

Names of 21457310784

• Cardinal: 21457310784 can be written as Twenty-one billion, four hundred fifty-seven million, three hundred ten thousand, seven hundred eighty-four.

Scientific notation

• Scientific notation: 2.1457310784 × 10¹⁰

Factors of 21457310784

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 5599

Divisors of 21457310784

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 17 21 24 26 28 32 34 39 42 48 51 52 56 64 68 78 84 91 96 102 104 112 119 136 156 168 169 182 192 204 208 221 224 238 272 273 312 336 338 357 364 408 416 442 448 476 507 544 546 624 663 672 676 714 728 816 832 884 952 1014 1088 1092 1183 1248 1326 1344 1352 1428 1456 1547 1632 1768 1904 2028 2184 2366 2496 2652 2704 2856 2873 2912 3094 3264 3536 3549 3808 4056 4368 4641 4732 5304 5408 5557 5712 5746 5824 6188 7072 7098 7616 8112 8619 8736 9282 9464 10608 10816 11114 11424 11492 12376 14144 14196 16224 16671 17238 17472 18564 18928 20111 21216 22228 22848 22984 24752 28392 32448 33342 34476 37128 37856 38899 40222 42432 44456 45968 49504 56784 60333 66684 68952 72241 74256 75712 77798 80444 88912 91936 94469 99008 113568 116697 120666 133368 137904 144482 148512 155596 160888 177824 183872 188938 216723 227136 233394 241332 266736 275808 283407 288964 297024 311192 321776 355648 377876 433446 466788 482664 505687 533472 551616 566814 577928 622384 643552 661283 755752 866892 933576 939133 965328 1011374 1066944 1133628 1155856 1228097 1244768 1287104 1322566 1511504 1517061 1733784 1867152 1878266 1930656 1983849 2022748 2267256 2311712 2456194 2489536 2645132 2817399 3023008 3034122 3467568 3684291 3734304 3756532 3861312 3967698 4045496 4534512 4623424 4912388 5290264 5634798 6046016 6068244 6573931 6935136 7368582 7468608 7513064 7935396 8090992 8596679 9069024 9824776 10580528 11269596 12136488 13147862 13870272 14737164 15026128 15870792 15965261 16181984 17193358 18138048 19649552 19721793 21161056 22539192 24272976 25790037 26295724 29474328 30052256 31741584 31930522 32363968 34386716 39299104 39443586 42322112 45078384 47895783 48545952 51580074 52591448 58948656 60104512 63483168 63861044 68773432 78598208 78887172 90156768 95791566 97091904 103160148 105182896 111756827 117897312 126966336 127722088 137546864 157774344 180313536 191583132 206320296 210365792 223513654 235794624 255444176 275093728 315548688 335270481 383166264 412640592 420731584 447027308 510888352 550187456 631097376 670540962 766332528 825281184 894054616 1021776704 1262194752 1341081924 1532665056 1650562368 1788109232 2682163848 3065330112 3576218464 5364327696 7152436928 10728655392 21457310784
• Sum of all divisors σ(n): 74403923328
• Sum of proper divisors (its aliquot sum) s(n): 52946612544
• 21457310784 is an abundant number, because the sum of its proper divisors (52946612544) is greater than itself. Its abundance is 31489301760

Bases of 21457310784

• Binary: 10011111110111101001001010001000000₂
• Hexadecimal: 0x4FEF49440
• Base-36: 9UV4MYO

Squares and roots of 21457310784

• 21457310784 squared (21457310784²) is 460416186081162694656
• 21457310784 cubed (21457310784³) is 9879293194727482987300687970304
• The square root of 21457310784 is 146483.1416375277
• The cube root of 21457310784 is 2778.8072961067

Scales and comparisons

• 21,457,310,784 seconds is equal to 682 years, 14 weeks, 2 days, 12 hours, 6 minutes, 24 seconds.
• To count from 1 to 21,457,310,784 would take you about one thousand, three hundred sixty-four 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 21457310784 cubic inches would be around 231.6 feet tall.

Recreational maths with 21457310784

• 21457310784 backwards is 48701375412
• 21457310784 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21457310784's digits is 42
• More coming soon!