21289748480

Names of 21289748480

• Cardinal: 21289748480 can be written as Twenty-one billion, two hundred eighty-nine million, seven hundred forty-eight thousand, four hundred eighty.

Scientific notation

• Scientific notation: 2.128974848 × 10¹⁰

Factors of 21289748480

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 136

Divisors of 21289748480

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 4 5 7 8 10 11 13 14 16 20 22 26 28 31 32 35 40 44 52 55 56 62 64 65 67 70 77 80 88 91 104 110 112 124 128 130 134 140 143 154 155 160 176 182 208 217 220 224 248 256 260 268 280 286 308 310 320 335 341 352 364 385 403 416 434 440 448 455 469 496 512 520 536 560 572 616 620 640 670 682 704 715 728 737 770 806 832 868 871 880 896 910 938 992 1001 1024 1040 1072 1085 1120 1144 1232 1240 1280 1340 1364 1408 1430 1456 1474 1540 1612 1664 1705 1736 1742 1760 1792 1820 1876 1984 2002 2015 2048 2077 2080 2144 2170 2240 2288 2345 2387 2464 2480 2560 2680 2728 2816 2821 2860 2912 2948 3080 3224 3328 3410 3472 3484 3520 3584 3640 3685 3752 3968 4004 4030 4154 4160 4288 4340 4355 4433 4480 4576 4690 4774 4928 4960 5005 5120 5159 5360 5456 5632 5642 5720 5824 5896 6097 6160 6448 6656 6820 6944 6968 7040 7168 7280 7370 7504 7936 8008 8060 8308 8320 8576 8680 8710 8866 8960 9152 9380 9548 9581 9856 9920 10010 10240 10318 10385 10720 10912 11264 11284 11440 11648 11792 11935 12194 12320 12896 13312 13640 13888 13936 14080 14105 14336 14539 14560 14740 15008 15872 16016 16120 16616 16640 17152 17360 17420 17732 17920 18304 18760 19096 19162 19712 19840 20020 20636 20770 21440 21824 22165 22528 22568 22847 22880 23296 23584 23870 24388 24640 25792 25795 26624 27001 27280 27776 27872 28160 28210 29078 29120 29480 30016 30485 31031 31744 32032 32240 33232 33280 34304 34720 34840 35464 35840 36608 37520 38192 38324 39424 39680 40040 41272 41540 42880 43648 44330 45136 45694 45760 46592 47168 47740 47905 48776 49280 51584 51590 54002 54560 55552 55744 56320 56420 58156 58240 58960 60032 60970 62062 63488 64064 64480 66464 66560 67067 68608 69440 69680 70928 71680 72695 73216 75040 76384 76648 78848 79360 80080 82544 83080 85760 87296 88660 90272 91388 91520 93184 94336 95480 95810 97552 98560 103168 103180 108004 109120 111104 111488 112640 112840 114235 116312 116480 117920 120064 121940 124124 128128 128960 132928 133120 134134 135005 137216 138880 139360 141856 145390 146432 150080 152768 153296 155155 157696 158720 159929 160160 165088 166160 171520 174592 177320 180544 182776 183040 186368 188672 189007 190960 191620 195104 197120 206336 206360 216008 218240 222208 222976 225680 228470 232624 232960 235840 240128 243880 248248 256256 257920 265856 268268 270010 277760 278720 283712 290780 292864 297011 300160 305536 306592 310310 317440 319858 320320 330176 332320 335335 343040 349184 354640 361088 365552 366080 377344 378014 381920 383240 390208 394240 412672 412720 432016 436480 444416 445952 451360 456940 465248 465920 471680 480256 487760 496496 512512 515840 531712 536536 540020 555520 557440 567424 581560 594022 600320 611072 613184 620620 639716 640640 660352 664640 670670 686080 698368 709280 722176 731104 732160 754688 756028 763840 766480 780416 788480 799645 825344 825440 864032 872960 891904 902720 913880 930496 931840 943360 945035 960512 975520 992992 1025024 1031680 1063424 1073072 1080040 1111040 1114880 1134848 1163120 1188044 1200640 1222144 1226368 1241240 1279432 1281280 1320704 1329280 1341340 1418560 1444352 1462208 1464320 1485055 1509376 1512056 1527680 1532960 1560832 1599290 1650880 1728064 1745920 1783808 1805440 1827760 1860992 1886720 1890070 1951040 1985984 2050048 2063360 2079077 2126848 2146144 2160080 2222080 2229760 2269696 2326240 2376088 2401280 2444288 2452736 2482480 2558864 2562560 2641408 2658560 2682680 2837120 2888704 2924416 2970110 3024112 3055360 3065920 3121664 3198580 3301760 3456128 3491840 3610880 3655520 3721984 3773440 3780140 3902080 3971968 4126720 4158154 4253696 4292288 4320160 4459520 4539392 4652480 4752176 4802560 4888576 4905472 4964960 5117728 5125120 5282816 5317120 5365360 5674240 5777408 5848832 5940220 6048224 6110720 6131840 6243328 6397160 6603520 6912256 7221760 7311040 7443968 7546880 7560280 7804160 7943936 8316308 8584576 8640320 8919040 9078784 9304960 9504352 9810944 9929920 10235456 10250240 10395385 10565632 10634240 10730720 11348480 11697664 11880440 12096448 12221440 12263680 12486656 12794320 13207040 13824512 14443520 14622080 14887936 15120560 15608320 15887872 16632616 17169152 17280640 18609920 19008704 19621888 19859840 20470912 20790770 21268480 21461440 22696960 23395328 23760880 24192896 24442880 24527360 25588640 26414080 27649024 28887040 29244160 29775872 30241120 31216640 31775744 33265232 34338304 34561280 37219840 38017408 39719680 40941824 41581540 42922880 45393920 46790656 47521760 48385792 49054720 51177280 52828160 55298048 58488320 60482240 62433280 63551488 66530464 68676608 69122560 74439680 76034816 79439360 81883648 83163080 85845760 95043520 96771584 98109440 102354560 116976640 120964480 133060928 137353216 138245120 148879360 152069632 158878720 163767296 166326160 171691520 190087040 193543168 204709120 233953280 241928960 266121856 276490240 304139264 317757440 327534592 332652320 343383040 380174080 387086336 409418240 483857920 532243712 608278528 665304640 686766080 760348160 818836480 967715840 1064487424 1330609280 1520696320 1637672960 1935431680 2128974848 2661218560 3041392640 4257949696 5322437120 10644874240 21289748480
• Sum of all divisors σ(n): 71856046080
• Sum of proper divisors (its aliquot sum) s(n): 50566297600
• 21289748480 is an abundant number, because the sum of its proper divisors (50566297600) is greater than itself. Its abundance is 29276549120

Bases of 21289748480

• Binary: 10011110100111101111100100000000000₂
• Hexadecimal: 0x4F4F7C800
• Base-36: 9S3D728

Squares and roots of 21289748480

• 21289748480 squared (21289748480²) is 453253390341662310400
• 21289748480 cubed (21289748480³) is 9649650678081251853511688192000
• The square root of 21289748480 is 145910.0698375543
• The cube root of 21289748480 is 2771.5550565839

Scales and comparisons

• 21,289,748,480 seconds is equal to 676 years, 49 weeks, 2 days, 3 hours, 1 minute, 20 seconds.
• To count from 1 to 21,289,748,480 would take you about one thousand, three hundred fifty-three 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 21289748480 cubic inches would be around 231 feet tall.

Recreational maths with 21289748480

• 21289748480 backwards is 08484798212
• The number of decimal digits it has is: 11
• The sum of 21289748480's digits is 53
• More coming soon!