21394078128

Names of 21394078128

• Cardinal: 21394078128 can be written as Twenty-one billion, three hundred ninety-four million, seventy-eight thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1394078128 × 10¹⁰

Factors of 21394078128

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 381

Divisors of 21394078128

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 17 18 19 24 27 29 34 36 38 48 51 54 57 58 68 72 76 87 102 108 114 116 136 144 152 153 171 174 204 216 228 232 261 272 289 304 306 311 323 342 348 408 432 456 459 464 493 513 522 551 578 612 622 646 684 696 783 816 867 912 918 933 969 986 1026 1044 1102 1156 1224 1244 1292 1368 1392 1479 1566 1653 1734 1836 1866 1938 1972 2052 2088 2204 2312 2448 2488 2584 2601 2736 2799 2907 2958 3132 3306 3468 3672 3732 3876 3944 4104 4176 4408 4437 4624 4959 4976 5168 5202 5287 5491 5598 5814 5909 5916 6264 6612 6936 7344 7464 7752 7803 7888 8208 8381 8397 8721 8816 8874 9019 9367 9918 10404 10574 10982 11196 11628 11818 11832 12528 13224 13311 13872 14877 14928 15504 15606 15861 16473 16762 16794 17442 17727 17748 18038 18734 19836 20808 21148 21964 22392 23256 23636 23664 25143 26448 26622 27057 28101 29754 31212 31722 32946 33524 33588 34884 35454 35496 36076 37468 39672 41616 42296 43928 44784 46512 47272 47583 49419 50286 53181 53244 54114 56202 59508 62424 63444 65892 67048 67176 69768 70908 70992 72152 74936 75429 79344 81171 84303 84592 87856 89879 94544 95166 98838 100453 100572 106362 106488 108228 112404 119016 124848 126888 131784 134096 134352 139536 141816 142749 144304 148257 149872 150858 153323 159239 159543 162342 168606 171361 179758 190332 197676 200906 201144 212724 212976 216456 224808 226287 238032 243513 252909 253776 263568 269637 283632 285498 296514 301359 301716 306646 318478 319086 324684 337212 342722 359516 380664 395352 401812 402288 425448 432912 449616 452574 459969 477717 487026 505818 514083 539274 570996 593028 602718 603432 613292 636956 638172 649368 674424 685444 719032 761328 790704 803624 808911 850896 904077 905148 919938 955434 974052 1011636 1028166 1078548 1141992 1186056 1205436 1206864 1226584 1273912 1276344 1298736 1348848 1370888 1379907 1433151 1438064 1542249 1607248 1617822 1707701 1808154 1810296 1839876 1910868 1948104 2023272 2056332 2157096 2283984 2372112 2410872 2426733 2453168 2547824 2552688 2606491 2712231 2741776 2759814 2866302 2913137 3084498 3235644 3415402 3616308 3620592 3679752 3821736 3896208 4046544 4112664 4139721 4299453 4314192 4626747 4821744 4853466 5123103 5212982 5424462 5519628 5732604 5826274 6168996 6471288 6830804 7232616 7359504 7643472 7819473 8225328 8279442 8598906 8739411 9253494 9706932 10246206 10425964 10848924 11039256 11465208 11652548 12337992 12942576 13661608 14465232 15369309 15638946 16558884 17197812 17478822 18506988 19413864 20492412 20851928 21697848 22078512 22930416 23305096 23458419 24675984 26218233 27323216 30738618 31277892 33117768 34395624 34957644 37013976 38827728 40984824 41703856 43395696 46107927 46610192 46916838 49523329 52436466 61477236 62555784 66235536 68791248 69915288 70375257 74027952 78654699 81969648 92215854 93833676 99046658 104872932 122954472 125111568 139830576 140750514 148569987 157309398 184431708 187667352 198093316 209745864 245908944 281501028 297139974 314618796 368863416 375334704 396186632 419491728 445709961 563002056 594279948 629237592 737726832 792373264 891419922 1126004112 1188559896 1258475184 1337129883 1782839844 2377119792 2674259766 3565679688 5348519532 7131359376 10697039064 21394078128
• Sum of all divisors σ(n): 71263296000
• Sum of proper divisors (its aliquot sum) s(n): 49869217872
• 21394078128 is an abundant number, because the sum of its proper divisors (49869217872) is greater than itself. Its abundance is 28475139744

Bases of 21394078128

• Binary: 10011111011001011111011100110110000₂
• Hexadecimal: 0x4FB2FB9B0
• Base-36: 9TTHCC0

Squares and roots of 21394078128

• 21394078128 squared (21394078128²) is 457706578946967984384
• 21394078128 cubed (21394078128³) is 9792210309691033026625979953152
• The square root of 21394078128 is 146267.1464410241
• The cube root of 21394078128 is 2776.0749833715

Scales and comparisons

• 21,394,078,128 seconds is equal to 680 years, 13 weeks, 5 days, 15 hours, 28 minutes, 48 seconds.
• To count from 1 to 21,394,078,128 would take you about one thousand, three hundred sixty 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 21394078128 cubic inches would be around 231.3 feet tall.

Recreational maths with 21394078128

• 21394078128 backwards is 82187049312
• The number of decimal digits it has is: 11
• The sum of 21394078128's digits is 45
• More coming soon!