21729442644

Names of 21729442644

• Cardinal: 21729442644 can be written as Twenty-one billion, seven hundred twenty-nine million, four hundred forty-two thousand, six hundred forty-four.

Scientific notation

• Scientific notation: 2.1729442644 × 10¹⁰

Factors of 21729442644

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 614

Divisors of 21729442644

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 19 21 26 27 28 36 38 39 42 52 54 57 63 76 78 79 81 84 91 108 114 117 126 133 156 158 162 171 182 189 228 234 237 247 252 266 273 316 324 342 351 364 378 399 468 474 491 494 513 532 546 553 567 684 702 711 741 756 798 819 948 982 988 1026 1027 1053 1092 1106 1134 1197 1404 1422 1473 1482 1501 1539 1596 1638 1659 1729 1964 2052 2054 2106 2133 2212 2223 2268 2394 2457 2844 2946 2964 3002 3078 3081 3276 3318 3437 3458 3591 4108 4212 4266 4419 4446 4503 4788 4914 4977 5187 5892 6004 6156 6162 6383 6399 6636 6669 6874 6916 7182 7189 7371 8532 8838 8892 9006 9243 9329 9828 9954 10311 10374 10507 10773 12324 12766 12798 13257 13338 13509 13748 14364 14378 14742 14931 15561 17676 18012 18486 18658 19149 19513 19908 20007 20622 20748 21014 21546 21567 25532 25596 26514 26676 27018 27729 27987 28756 29484 29862 30933 31122 31521 36972 37316 38298 38789 39026 39771 40014 40527 41244 42028 43092 43134 44681 44793 46683 53028 54036 55458 55974 57447 58539 59724 61866 62244 63042 64701 65303 76596 77578 78052 79542 80028 81054 83187 83961 86268 89362 89586 92799 93366 94563 110916 111948 114894 116367 117078 121277 121581 123732 126084 129402 130606 134043 136591 140049 155156 159084 162108 166374 167922 172341 175617 178724 179172 185598 186732 189126 194103 195909 229788 232734 234156 242554 243162 251883 258804 261212 268086 271523 273182 278397 280098 283689 332748 335844 344682 349101 351234 363831 371196 378252 388206 391818 402129 409773 465468 485108 486324 503766 504257 517023 526851 536172 543046 546364 556794 560196 567378 582309 587727 689364 698202 702468 727662 736991 755649 776412 783636 804258 814569 819546 848939 851067 1007532 1008514 1034046 1047303 1053702 1086092 1091493 1113588 1134756 1164618 1175454 1206387 1229319 1396404 1455324 1473982 1511298 1512771 1580553 1608516 1629138 1639092 1697878 1702134 1763181 2017028 2068092 2094606 2107404 2182986 2210973 2329236 2350908 2412774 2443707 2458638 2546817 2947964 3022596 3025542 3141909 3161106 3258276 3274479 3395756 3404268 3526362 3529799 3619161 3687957 4189212 4365972 4421946 4538313 4825548 4887414 4917276 5093634 5158937 5289543 6051084 6283818 6322212 6548958 6632919 7052724 7059598 7238322 7331121 7375914 7640451 8843892 9076626 9580883 9774828 9823437 10187268 10317874 10579086 10589397 11063871 12567636 13097916 13265838 13614939 14119196 14476644 14662242 14751828 15280902 15476811 18153252 19161766 19646874 19898757 20635748 21158172 21178794 21993363 22127742 22921353 26531676 27229878 28742649 29324484 30561804 30953622 31768191 38323532 39293748 39797514 40844817 42357588 43986726 44255484 45842706 46430433 54459756 57485298 59696271 61907244 63536382 67066181 68764059 79595028 81689634 86227947 87973452 91685412 92860866 95304573 114970596 119392542 127072764 134132362 137528118 139291299 163379268 172455894 185721732 190609146 201198543 238785084 258683841 268264724 275056236 278582598 285913719 344911788 381218292 402397086 417873897 517367682 557165196 571827438 603595629 776051523 804794172 835747794 1034735364 1143654876 1207191258 1552103046 1671495588 1810786887 2414382516 3104206092 3621573774 5432360661 7243147548 10864721322 21729442644
• Sum of all divisors σ(n): 74676940800
• Sum of proper divisors (its aliquot sum) s(n): 52947498156
• 21729442644 is an abundant number, because the sum of its proper divisors (52947498156) is greater than itself. Its abundance is 31218055512

Bases of 21729442644

• Binary: 10100001111001011001111101101010100₂
• Hexadecimal: 0x50F2CFB54
• Base-36: 9ZD5D90

Squares and roots of 21729442644

• 21729442644 squared (21729442644²) is 472168677618885710736
• 21729442644 cubed (21729442644³) is 10259962198612903542629087025984
• The square root of 21729442644 is 147409.0995970059
• The cube root of 21729442644 is 2790.5053680451

Scales and comparisons

• 21,729,442,644 seconds is equal to 690 years, 48 weeks, 2 days, 4 hours, 17 minutes, 24 seconds.
• To count from 1 to 21,729,442,644 would take you about one thousand, three hundred eighty-one 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 21729442644 cubic inches would be around 232.5 feet tall.

Recreational maths with 21729442644

• 21729442644 backwards is 44624492712
• The number of decimal digits it has is: 11
• The sum of 21729442644's digits is 45
• More coming soon!