21497142744

Names of 21497142744

• Cardinal: 21497142744 can be written as Twenty-one billion, four hundred ninety-seven million, one hundred forty-two thousand, seven hundred forty-four.

Scientific notation

• Scientific notation: 2.1497142744 × 10¹⁰

Factors of 21497142744

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 220

Divisors of 21497142744

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 27 28 33 36 42 44 54 56 63 66 72 77 81 84 88 99 108 126 132 154 162 168 189 197 198 216 231 243 252 264 297 308 324 378 394 396 462 486 504 567 591 594 616 648 693 729 756 788 792 891 924 972 1134 1182 1188 1379 1386 1458 1512 1576 1701 1773 1782 1848 1944 2079 2167 2187 2268 2364 2376 2673 2758 2772 2916 3402 3546 3564 4137 4158 4334 4374 4536 4728 5103 5319 5346 5516 5544 5832 6237 6501 6561 6804 7092 7128 8019 8274 8316 8668 8748 10206 10638 10692 11032 12411 12474 13002 13122 13608 14184 15169 15309 15957 16038 16548 16632 17336 17496 18711 19503 19683 20412 21276 21384 24057 24822 24948 26004 26244 30338 30618 31914 32076 33096 37233 37422 39006 39366 40824 42552 45507 45927 47871 48114 49644 49896 52008 52488 56133 58509 59049 60676 61236 63828 64152 72171 74466 74844 78012 78732 91014 91854 95742 96228 99288 111699 112266 117018 118098 121352 122472 127656 136521 137781 143613 144342 148932 149688 156024 157464 168399 175527 177147 182028 183708 191484 192456 216513 223398 224532 234036 236196 273042 275562 287226 288684 297864 335097 336798 351054 354294 364056 367416 382968 409563 413343 430839 433026 446796 449064 468072 472392 505197 526581 546084 551124 574452 577368 649539 670194 673596 702108 708588 819126 826686 861678 866052 893592 1005291 1010394 1053162 1092168 1102248 1148904 1228689 1240029 1292517 1299078 1340388 1347192 1404216 1417176 1515591 1579743 1638252 1653372 1723356 1732104 1948617 2010582 2020788 2106324 2457378 2480058 2585034 2598156 2680776 3015873 3031182 3159486 3276504 3306744 3446712 3686067 3877551 3897234 4021164 4041576 4212648 4546773 4739229 4914756 4960116 5170068 5196312 6031746 6062364 6318972 7372134 7755102 7794468 8042328 9047619 9093546 9478458 9829512 9920232 10340136 11058201 11632653 12063492 12124728 12637944 13640319 14217687 14744268 15510204 15588936 18095238 18187092 18956916 22116402 23265306 24126984 27142857 27280638 28435374 29488536 31020408 33174603 34897959 36190476 36374184 37913832 42653061 44232804 46530612 54285714 54561276 56870748 66349206 69795918 72380952 81428571 85306122 88465608 93061224 99523809 108571428 109122552 113741496 127959183 132698412 139591836 162857142 170612244 199047618 217142856 244285713 255918366 265396824 279183672 298571427 325714284 341224488 383877549 398095236 488571426 511836732 597142854 651428568 767755098 796190472 895714281 977142852 1023673464 1194285708 1535510196 1791428562 1954285704 2388571416 2687142843 3071020392 3582857124 5374285686 7165714248 10748571372 21497142744
• Sum of all divisors σ(n): 75762086400
• Sum of proper divisors (its aliquot sum) s(n): 54264943656
• 21497142744 is an abundant number, because the sum of its proper divisors (54264943656) is greater than itself. Its abundance is 32767800912

Bases of 21497142744

• Binary: 10100000001010101000101110111011000₂
• Hexadecimal: 0x501545DD8
• Base-36: 9VIUDI0

Squares and roots of 21497142744

• 21497142744 squared (21497142744²) is 462127146155911849536
• 21497142744 cubed (21497142744³) is 9934413226790987908956442166784
• The square root of 21497142744 is 146619.0395003323
• The cube root of 21497142744 is 2780.5256991105

Scales and comparisons

• 21,497,142,744 seconds is equal to 683 years, 28 weeks, 1 day, 12 hours, 32 minutes, 24 seconds.
• To count from 1 to 21,497,142,744 would take you about one thousand, three hundred sixty-seven 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 21497142744 cubic inches would be around 231.7 feet tall.

Recreational maths with 21497142744

• 21497142744 backwards is 44724179412
• The number of decimal digits it has is: 11
• The sum of 21497142744's digits is 45
• More coming soon!