21085724088

Names of 21085724088

• Cardinal: 21085724088 can be written as Twenty-one billion, eighty-five million, seven hundred twenty-four thousand and eighty-eight.

Scientific notation

• Scientific notation: 2.1085724088 × 10¹⁰

Factors of 21085724088

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 140

Divisors of 21085724088

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 18 19 22 24 26 27 31 33 36 38 39 44 52 54 57 61 62 66 72 76 78 88 93 99 104 108 114 117 122 124 132 143 152 156 171 183 186 198 209 216 228 234 244 247 248 264 279 286 297 312 341 342 351 361 366 372 396 403 418 429 456 468 488 494 513 549 558 572 589 594 627 671 682 684 702 722 732 741 744 792 793 806 836 837 858 936 988 1023 1026 1083 1098 1116 1144 1159 1178 1188 1209 1254 1287 1342 1364 1368 1404 1444 1464 1482 1586 1612 1647 1672 1674 1716 1767 1881 1891 1976 2013 2046 2052 2166 2196 2223 2232 2318 2356 2376 2379 2418 2508 2574 2684 2717 2728 2808 2888 2964 3069 3172 3224 3249 3294 3348 3432 3477 3534 3627 3762 3782 3861 3971 4026 4092 4104 4332 4392 4433 4446 4636 4693 4712 4758 4836 5016 5148 5301 5368 5434 5643 5673 5928 6039 6138 6344 6479 6498 6588 6669 6696 6954 7068 7137 7254 7524 7564 7657 7722 7942 8052 8151 8184 8664 8723 8866 8892 9207 9272 9386 9516 9672 9747 10296 10431 10602 10868 10881 11191 11286 11346 11913 12078 12276 12749 12958 12996 13176 13299 13338 13908 14079 14136 14274 14508 15048 15067 15128 15314 15444 15884 15903 16104 16302 17019 17446 17732 17784 18117 18414 18772 19032 19437 19494 20801 20862 21204 21411 21736 21762 22021 22382 22572 22692 22971 23826 24156 24453 24552 24583 25498 25916 25992 26169 26598 26676 27816 28158 28548 29016 30134 30628 30888 31293 31768 31806 32604 33573 34038 34892 35464 35739 35929 36234 36828 37544 38247 38874 38988 39897 41602 41724 42237 42408 42822 43524 44042 44764 45144 45201 45384 45942 47652 48312 48906 49166 50996 51057 51623 51832 52338 53196 53352 56316 57096 58311 60268 61256 62403 62586 63612 65208 66063 67146 68076 68913 69784 71478 71858 72468 73359 73656 73749 76494 77748 77976 78507 79794 83204 83448 84227 84474 85644 87048 88084 89528 90402 91884 95304 97812 98332 100719 101992 102114 103246 104676 106392 107217 107787 112632 114741 116622 119691 120536 123101 124806 125172 126711 127224 132126 134292 135603 136152 137826 142956 143716 144936 145483 146718 147498 152988 154869 155496 157014 159588 165737 166408 168454 168948 171288 174933 176168 180804 183768 187209 195624 196664 198189 201438 204228 206492 206739 209352 214434 215574 221247 229482 233244 235521 239382 242231 246202 249612 250344 252681 253422 264252 268584 270413 271206 275652 285912 286273 287432 290966 293436 294996 302157 305976 309738 314028 319176 323361 331474 336908 337896 344223 349866 361608 369303 374418 395219 396378 402876 406809 408456 412984 413478 428868 431148 436449 442494 458964 464607 466488 467077 471042 478764 484462 492404 497211 499224 505362 506844 528504 540826 542412 551304 561627 572546 581932 586872 589992 594567 604314 619476 628056 646722 662948 663741 673816 682651 688446 699732 726693 738606 748836 758043 790438 792756 805752 811239 813618 826956 857736 858819 862296 872898 884988 917928 929214 934154 942084 957528 968924 970083 984808 994422 1010724 1013688 1081652 1084824 1107909 1123254 1145092 1163864 1185657 1189134 1208628 1238952 1293444 1309347 1325896 1327482 1365302 1376892 1393821 1399464 1401231 1453386 1477212 1491633 1497672 1516086 1580876 1585512 1600313 1622478 1627236 1653912 1717638 1745796 1769976 1858428 1868308 1884168 1937848 1940166 1988844 2021448 2047953 2163304 2180079 2215818 2246508 2274129 2290184 2371314 2378268 2417256 2433717 2576457 2586888 2618694 2654964 2730604 2753784 2787642 2802462 2906772 2954424 2983266 3032172 3149003 3161752 3200626 3244956 3254472 3323727 3435276 3491592 3556971 3716856 3736616 3880332 3928041 3977688 4095906 4203693 4360158 4431636 4474899 4493016 4548258 4742628 4756536 4800939 4867434 5137847 5152914 5237388 5309928 5461208 5575284 5604924 5813544 5966532 6064344 6143859 6298006 6401252 6489912 6540237 6647454 6870552 7113942 7301151 7509161 7729371 7760664 7856082 8191812 8407386 8720316 8863272 8874463 8949798 9096516 9447009 9485256 9601878 9734868 10275694 10305828 10474776 10670913 11150568 11209848 11933064 12287718 12596012 12611079 12802504 13080474 13294908 14227884 14402817 14602302 15018322 15413541 15458742 15712164 16383624 16814772 17440632 17748926 17899596 18193032 18431577 18894018 19203756 19469736 20551388 20611656 21341826 22527483 24575436 25192024 25222158 26160948 26589816 26623389 28341027 28455768 28805634 29204604 30036644 30827082 30917484 31424328 33629544 35497852 35799192 36863154 37788036 38407512 41102776 42683652 43208451 45054966 46240623 49150872 50444316 52321896 53246778 56682054 57611268 58409208 60073288 61654164 61834968 67582449 70995704 73726308 75576072 79870167 85023081 85367304 86416902 90109932 92481246 97619093 100888632 106493556 113364108 115222536 123308328 135164898 138721869 147452616 159740334 170046162 172833804 180219864 184962492 195238186 202747347 212987112 226728216 239610501 270329796 277443738 292857279 319480668 340092324 345667608 369924984 390476372 405494694 479221002 540659592 554887476 585714558 638961336 680184648 780952744 810989388 878571837 958442004 1109774952 1171429116 1621978776 1757143674 1916884008 2342858232 2635715511 3514287348 5271431022 7028574696 10542862044 21085724088
• Sum of all divisors σ(n): 76195123200
• Sum of proper divisors (its aliquot sum) s(n): 55109399112
• 21085724088 is an abundant number, because the sum of its proper divisors (55109399112) is greater than itself. Its abundance is 34023675024

Bases of 21085724088

• Binary: 10011101000110011101001110110111000₂
• Hexadecimal: 0x4E8CE9DB8
• Base-36: 9OPW8U0

Squares and roots of 21085724088

• 21085724088 squared (21085724088²) is 444607760315263431744
• 21085724088 cubed (21085724088³) is 9374876561391280616790004649472
• The square root of 21085724088 is 145209.2424331179
• The cube root of 21085724088 is 2762.6731473763

Scales and comparisons

• 21,085,724,088 seconds is equal to 670 years, 23 weeks, 6 days, 17 hours, 34 minutes, 48 seconds.
• To count from 1 to 21,085,724,088 would take you about one thousand, three hundred forty 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 21085724088 cubic inches would be around 230.2 feet tall.

Recreational maths with 21085724088

• 21085724088 backwards is 88042758012
• The number of decimal digits it has is: 11
• The sum of 21085724088's digits is 45
• More coming soon!