21397489344

Names of 21397489344

• Cardinal: 21397489344 can be written as Twenty-one billion, three hundred ninety-seven million, four hundred eighty-nine thousand, three hundred forty-four.

Scientific notation

• Scientific notation: 2.1397489344 × 10¹⁰

Factors of 21397489344

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 64

Divisors of 21397489344

• Number of divisors d(n): 504
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 28 32 33 36 41 42 44 48 49 56 63 64 66 72 77 82 84 88 96 98 99 112 123 126 132 144 147 154 164 168 176 192 196 198 224 231 246 252 264 287 288 294 308 328 336 352 369 392 396 441 448 451 462 492 504 528 539 574 576 588 616 656 672 693 704 738 784 792 861 882 902 924 984 1008 1056 1078 1148 1176 1232 1312 1344 1353 1386 1476 1568 1584 1617 1681 1722 1764 1804 1848 1968 2009 2016 2112 2156 2296 2352 2464 2583 2624 2706 2772 2952 3136 3157 3168 3234 3362 3444 3528 3608 3696 3936 4018 4032 4059 4312 4592 4704 4851 4928 5043 5166 5412 5544 5904 6027 6314 6336 6468 6724 6888 7056 7216 7392 7872 8036 8118 8624 9184 9408 9471 9702 10086 10332 10824 11088 11767 11808 12054 12628 12936 13448 13776 14112 14432 14784 15129 16072 16236 17248 18081 18368 18491 18942 19404 20172 20664 21648 22099 22176 23534 23616 24108 25256 25872 26896 27552 28224 28413 28864 30258 32144 32472 34496 35301 36162 36982 37884 38808 40344 41328 43296 44198 44352 47068 48216 50512 51744 53792 55104 55473 56826 60516 64288 64944 66297 68921 70602 72324 73964 75768 77616 80688 82369 82656 86592 88396 94136 96432 101024 103488 105903 107584 110946 113652 121032 128576 129437 129888 132594 137842 141204 144648 147928 151536 155232 161376 164738 165312 166419 176792 188272 192864 198891 202048 206763 211806 221892 227304 242064 247107 258874 259776 265188 275684 282408 289296 295856 303072 310464 322752 329476 332838 353584 376544 385728 388311 397782 413526 423612 443784 454608 482447 484128 494214 517748 530376 551368 564816 578592 591712 606144 620289 658952 665676 707168 741321 753088 758131 776622 795564 827052 847224 887568 906059 909216 964894 968256 988428 1035496 1060752 1102736 1129632 1157184 1164933 1183424 1240578 1317904 1331352 1414336 1447341 1482642 1516262 1553244 1591128 1654104 1694448 1775136 1812118 1818432 1929788 1976856 2070992 2121504 2205472 2259264 2274393 2329866 2481156 2635808 2662704 2718177 2894682 2965284 3032524 3106488 3182256 3308208 3377129 3388896 3550272 3624236 3859576 3953712 4141984 4243008 4342023 4410944 4548786 4659732 4962312 5271616 5306917 5325408 5436354 5789364 5930568 6065048 6212976 6364512 6616416 6754258 6777792 6823179 7248472 7719152 7907424 8154531 8283968 8684046 9097572 9319464 9924624 10131387 10613834 10650816 10872708 11578728 11861136 12130096 12425952 12729024 13232832 13508516 13646358 14496944 15438304 15814848 15920751 16309062 17368092 18195144 18638928 19849248 20262774 21227668 21745416 23157456 23722272 24260192 24851904 27017032 27292716 28993888 30394161 30876608 31841502 32618124 34736184 36390288 37148419 37277856 39698496 40525548 42455336 43490832 46314912 47444544 47762253 48520384 54034064 54585432 57987776 60788322 63683004 65236248 69472368 72780576 74296838 74555712 81051096 84910672 86981664 92629824 95524506 108068128 109170864 111445257 121576644 127366008 130472496 138944736 145561152 148593676 162102192 169821344 173963328 191049012 216136256 218341728 222890514 243153288 254732016 260944992 277889472 297187352 324204384 334335771 339642688 382098024 436683456 445781028 486306576 509464032 521889984 594374704 648408768 668671542 764196048 891562056 972613152 1018928064 1188749408 1337343084 1528392096 1783124112 1945226304 2377498816 2674686168 3056784192 3566248224 5349372336 7132496448 10698744672 21397489344
• Sum of all divisors σ(n): 79777138896
• Sum of proper divisors (its aliquot sum) s(n): 58379649552
• 21397489344 is an abundant number, because the sum of its proper divisors (58379649552) is greater than itself. Its abundance is 36982160208

Bases of 21397489344

• Binary: 10011111011011000111100011011000000₂
• Hexadecimal: 0x4FB63C6C0
• Base-36: 9TVIGG0

Squares and roots of 21397489344

• 21397489344 squared (21397489344²) is 457852550226593550336
• 21397489344 cubed (21397489344³) is 9796895064596760278733687619584
• The square root of 21397489344 is 146278.8068860285
• The cube root of 21397489344 is 2776.2225208985

Scales and comparisons

• 21,397,489,344 seconds is equal to 680 years, 19 weeks, 3 days, 3 hours, 2 minutes, 24 seconds.
• To count from 1 to 21,397,489,344 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 21397489344 cubic inches would be around 231.4 feet tall.

Recreational maths with 21397489344

• 21397489344 backwards is 44398479312
• The number of decimal digits it has is: 11
• The sum of 21397489344's digits is 54
• More coming soon!