21243847968

Names of 21243847968

• Cardinal: 21243847968 can be written as Twenty-one billion, two hundred forty-three million, eight hundred forty-seven thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1243847968 × 10¹⁰

Factors of 21243847968

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 501

Divisors of 21243847968

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 43 48 54 56 63 72 73 81 84 86 96 108 112 126 129 144 146 162 168 172 189 216 219 224 252 258 288 292 301 324 336 344 373 378 387 432 438 504 511 516 567 584 602 648 657 672 688 746 756 774 864 876 903 1008 1022 1032 1119 1134 1161 1168 1204 1296 1314 1376 1492 1512 1533 1548 1752 1806 1971 2016 2044 2064 2238 2268 2322 2336 2408 2592 2611 2628 2709 2984 3024 3066 3096 3139 3357 3483 3504 3612 3942 4088 4128 4476 4536 4599 4644 4816 5222 5256 5418 5913 5968 6048 6132 6192 6278 6714 6966 7008 7224 7833 7884 8127 8176 8952 9072 9198 9288 9417 9632 10071 10444 10512 10836 11826 11936 12264 12384 12556 13428 13797 13932 14448 15666 15768 16039 16254 16352 17904 18144 18396 18576 18834 20142 20888 21024 21672 21973 23499 23652 24381 24528 25112 26856 27229 27594 27864 28251 28896 30213 31332 31536 32078 32508 35808 36792 37152 37668 40284 41391 41776 43344 43946 46998 47304 48117 48762 49056 50224 53712 54458 55188 55728 56502 60426 62664 63072 64156 65016 65919 70497 73584 75336 80568 81687 82782 83552 84753 86688 87892 93996 94608 96234 97524 100448 107424 108916 110376 111456 112273 113004 120852 125328 128312 130032 131838 140994 144351 147168 150672 161136 163374 165564 169506 175784 187992 189216 190603 192468 195048 197757 211491 217832 220752 224546 226008 241704 245061 250656 254259 256624 260064 263676 281988 288702 301344 322272 326748 331128 336819 339012 351568 375984 381206 384936 390096 395514 422982 433053 435664 441504 449092 452016 483408 490122 508518 513248 527352 563976 571809 577404 593271 653496 662256 673638 678024 703136 735183 751968 762412 769872 780192 791028 845964 866106 871328 898184 904032 966816 980244 1010457 1017036 1054704 1127952 1143618 1154808 1170847 1186542 1299159 1306992 1324512 1347276 1356048 1470366 1524824 1539744 1582056 1691928 1715427 1732212 1779813 1796368 1960488 2020914 2034072 2109408 2205549 2255904 2287236 2309616 2341694 2373084 2598318 2613984 2694552 2712096 2940732 3031371 3049648 3164112 3383856 3430854 3464424 3512541 3559626 3592736 3920976 4041828 4068144 4411098 4574472 4619232 4683388 4746168 5146281 5196636 5389104 5881464 6062742 6099296 6328224 6767712 6861708 6928848 7025082 7119252 7841952 8083656 8136288 8195929 8822196 9094113 9148944 9366776 9492336 10292562 10393272 10537623 10778208 11762928 12125484 13723416 13857696 14050164 14238504 15438843 16167312 16391858 17644392 18188226 18297888 18733552 18984672 20585124 20786544 21075246 23525856 24250968 24587787 27446832 28100328 28477008 30877686 31612869 32334624 32783716 35288784 36376452 37467104 41170248 41573088 42150492 48501936 49175574 54893664 56200656 56954016 61755372 63225738 65567432 70577568 72752904 73763361 82340496 84300984 94838607 97003872 98351148 112401312 123510744 126451476 131134864 145505808 147526722 164680992 168601968 189677214 196702296 221290083 247021488 252902952 262269728 291011616 295053444 337203936 379354428 393404592 442580166 494042976 505805904 590106888 663870249 758708856 786809184 885160332 1011611808 1180213776 1327740498 1517417712 1770320664 2360427552 2655480996 3034835424 3540641328 5310961992 7081282656 10621923984 21243847968
• Sum of all divisors σ(n): 74262900096
• Sum of proper divisors (its aliquot sum) s(n): 53019052128
• 21243847968 is an abundant number, because the sum of its proper divisors (53019052128) is greater than itself. Its abundance is 31775204160

Bases of 21243847968

• Binary: 10011110010001110110110010100100000₂
• Hexadecimal: 0x4F23B6520
• Base-36: 9RC1E00

Squares and roots of 21243847968

• 21243847968 squared (21243847968²) is 451301076487497729024
• 21243847968 cubed (21243847968³) is 9587371456695141208131117023232
• The square root of 21243847968 is 145752.6945479911
• The cube root of 21243847968 is 2769.5618072461

Scales and comparisons

• 21,243,847,968 seconds is equal to 675 years, 25 weeks, 2 days, 20 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,243,847,968 would take you about one thousand, three hundred fifty 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 21243847968 cubic inches would be around 230.8 feet tall.

Recreational maths with 21243847968

• 21243847968 backwards is 86974834212
• 21243847968 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21243847968's digits is 54
• More coming soon!