21353664640

Names of 21353664640

• Cardinal: 21353664640 can be written as Twenty-one billion, three hundred fifty-three million, six hundred sixty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.135366464 × 10¹⁰

Factors of 21353664640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 472

Divisors of 21353664640

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 17 20 22 28 32 34 35 40 44 55 56 64 68 70 71 77 80 85 88 110 112 119 128 136 140 142 154 160 170 176 187 220 224 238 272 280 284 308 320 340 352 355 359 374 385 440 448 476 497 544 560 568 595 616 640 680 704 710 718 748 770 781 880 896 935 952 994 1088 1120 1136 1190 1207 1232 1309 1360 1408 1420 1436 1496 1540 1562 1760 1795 1870 1904 1988 2176 2240 2272 2380 2414 2464 2485 2513 2618 2720 2840 2872 2992 3080 3124 3520 3590 3740 3808 3905 3949 3976 4480 4544 4760 4828 4928 4970 5026 5236 5440 5467 5680 5744 5984 6035 6103 6160 6248 6545 7040 7180 7480 7616 7810 7898 7952 8449 9088 9520 9656 9856 9940 10052 10472 10880 10934 11360 11488 11968 12070 12206 12320 12496 12565 13090 13277 14360 14960 15232 15620 15796 15904 16898 19040 19312 19745 19880 20104 20944 21868 22720 22976 23936 24140 24412 24640 24992 25130 25489 26180 26554 27335 27643 28720 29920 30515 31240 31592 31808 33796 38080 38624 39490 39760 40208 41888 42245 42721 43736 45440 45952 48280 48824 49280 49984 50260 50978 52360 53108 54670 55286 57440 59840 61030 62480 63184 63616 66385 67133 67592 76160 77248 78980 79520 80416 83776 84490 85442 87472 92939 96560 97648 99968 100520 101956 104720 106216 109340 110572 114880 119680 122060 124960 126368 127445 132770 134266 135184 138215 154496 157960 159040 160832 167552 168980 170884 174944 178423 185878 193120 195296 201040 203912 209440 212432 213605 218680 221144 229760 244120 249920 252736 254890 265540 268532 270368 276430 280379 315920 318080 321664 335665 337960 341768 349888 356846 371756 386240 390592 402080 407824 418880 424864 427210 433313 437360 442288 464695 469931 488240 499840 505472 509780 531080 537064 540736 552860 560758 631840 671330 675920 683536 699776 713692 743512 772480 781184 804160 815648 837760 849728 854420 866626 874720 884576 892115 929390 939862 976480 1019560 1062160 1074128 1081472 1105720 1121516 1263680 1342660 1351840 1367072 1401895 1427384 1487024 1608320 1631296 1699456 1708840 1733252 1749440 1769152 1784230 1858780 1879724 1952960 1962653 2039120 2124320 2148256 2166565 2211440 2243032 2349655 2527360 2685320 2703680 2734144 2803790 2854768 2974048 3033191 3262592 3417680 3466504 3498880 3538304 3568460 3717560 3759448 3905920 3925306 4078240 4248640 4296512 4333130 4422880 4486064 4699310 4766443 5370640 5407360 5468288 5607580 5709536 5948096 6066382 6835360 6933008 7136920 7435120 7518896 7850612 8156480 8497280 8593024 8666260 8845760 8972128 9398620 9532886 9813265 10741280 11215160 11419072 11896192 12132764 13670720 13866016 14273840 14870240 15037792 15165955 15701224 16312960 17332520 17691520 17944256 18797240 19065772 19626530 21482560 22430320 22838144 23832215 24265528 27341440 27732032 28547680 29740480 30075584 30331910 31402448 33365101 34665040 35888512 37594480 38131544 39253060 42965120 44860640 47664430 48531056 55464064 57095360 59480960 60151168 60663820 62804896 66730202 69330080 75188960 76263088 78506120 89721280 95328860 97062112 114190720 121327640 125609792 133460404 138660160 150377920 152526176 157012240 166825505 179442560 190657720 194124224 242655280 251219584 266920808 277320320 300755840 305052352 314024480 333651010 381315440 388248448 485310560 533841616 610104704 628048960 667302020 762630880 970621120 1067683232 1256097920 1334604040 1525261760 1941242240 2135366464 2669208080 3050523520 4270732928 5338416160 10676832320 21353664640
• Sum of all divisors σ(n): 68528332800
• Sum of proper divisors (its aliquot sum) s(n): 47174668160
• 21353664640 is an abundant number, because the sum of its proper divisors (47174668160) is greater than itself. Its abundance is 25821003520

Bases of 21353664640

• Binary: 10011111000110001110001000010000000₂
• Hexadecimal: 0x4F8C71080
• Base-36: 9T5F534

Squares and roots of 21353664640

• 21353664640 squared (21353664640²) is 455978993557586329600
• 21353664640 cubed (21353664640³) is 9736822511313419010126905344000
• The square root of 21353664640 is 146128.9315638759
• The cube root of 21353664640 is 2774.3258764525

Scales and comparisons

• 21,353,664,640 seconds is equal to 678 years, 50 weeks, 6 days, 21 hours, 30 minutes, 40 seconds.
• To count from 1 to 21,353,664,640 would take you about one thousand, three hundred fifty-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 21353664640 cubic inches would be around 231.2 feet tall.

Recreational maths with 21353664640

• 21353664640 backwards is 04646635312
• 21353664640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21353664640's digits is 40
• More coming soon!