21238771840

Names of 21238771840

• Cardinal: 21238771840 can be written as Twenty-one billion, two hundred thirty-eight million, seven hundred seventy-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.123877184 × 10¹⁰

Factors of 21238771840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 121

Divisors of 21238771840

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 17 20 22 26 32 34 40 44 52 55 64 65 68 73 80 85 88 104 110 121 128 130 136 143 146 160 170 176 187 208 220 221 242 260 272 286 289 292 320 340 352 365 374 416 440 442 484 520 544 572 578 584 605 640 680 704 715 730 748 803 832 880 884 935 949 968 1040 1088 1105 1144 1156 1168 1210 1241 1360 1408 1430 1445 1460 1496 1573 1606 1664 1760 1768 1870 1898 1936 2057 2080 2176 2210 2288 2312 2336 2420 2431 2482 2720 2860 2890 2920 2992 3146 3179 3212 3520 3536 3740 3757 3796 3872 4015 4114 4160 4420 4576 4624 4672 4745 4840 4862 4964 5440 5720 5780 5840 5984 6205 6292 6358 6424 7040 7072 7480 7514 7592 7744 7865 8030 8228 8320 8833 8840 9152 9248 9344 9490 9680 9724 9928 10285 10439 10880 11440 11560 11680 11968 12155 12410 12584 12716 12848 13651 14144 14960 15028 15184 15488 15730 15895 16060 16133 16456 17666 17680 18304 18496 18785 18980 19360 19448 19856 20570 20878 21097 22880 23120 23360 23936 24310 24820 25168 25432 25696 26741 27302 28288 29920 30056 30368 31460 31790 32120 32266 32912 34969 35332 35360 36992 37570 37960 38720 38896 39712 41140 41327 41756 42194 44165 45760 46240 46720 48620 49640 50336 50864 51392 52195 53482 54604 59840 60112 60736 62920 63580 64240 64532 65824 68255 69938 70664 70720 75140 75920 77440 77792 79424 80665 82280 82654 83512 84388 88330 91520 92480 97240 99280 100672 101728 102784 104390 105485 106964 109208 114829 119680 120224 121472 125840 127160 128480 129064 131648 133705 136510 139876 141328 141440 150161 150280 151840 155584 158848 161330 164560 165308 167024 168776 174845 176660 177463 184960 194480 198560 201344 203456 206635 208780 210970 213928 218416 229658 232067 240448 251680 254320 256960 258128 263296 267410 273020 274261 279752 282656 300322 300560 303680 311168 322660 329120 330616 334048 337552 349690 353320 354926 388960 397120 406912 413270 417560 421940 427856 436832 454597 459316 464134 480896 503360 508640 513920 516256 534820 546040 548522 559504 565312 574145 600644 601120 607360 645320 658240 661232 668096 675104 699380 706640 709852 750805 777920 794240 826540 835120 843880 855712 873664 887315 909194 918632 928268 1006720 1017280 1032512 1069640 1092080 1097044 1119008 1130624 1148290 1160335 1201288 1202240 1290640 1316480 1322464 1336192 1350208 1371305 1398760 1413280 1419704 1501610 1555840 1653080 1670240 1687760 1711424 1747328 1774630 1818388 1837264 1856536 1952093 2034560 2065024 2139280 2184160 2194088 2238016 2272985 2296580 2320670 2402576 2404480 2552737 2581280 2644928 2700416 2742610 2797520 2826560 2839408 3003220 3016871 3306160 3340480 3375520 3422848 3549260 3636776 3674528 3713072 3904186 4278560 4368320 4388176 4476032 4545970 4593160 4641340 4805152 5105474 5162560 5289856 5485220 5595040 5653120 5678816 6006440 6033742 6612320 6680960 6751040 7098520 7273552 7349056 7426144 7808372 8557120 8736640 8776352 9091940 9186320 9282680 9610304 9760465 10210948 10325120 10970440 11190080 11357632 12012880 12067484 12763685 13224640 13502080 14197040 14547104 14698112 14852288 15084355 15616744 17114240 17552704 18183880 18372640 18565360 19220608 19520930 20421896 21940880 22380160 22715264 24025760 24134968 25527370 26449280 28394080 29094208 29704576 30168710 31233488 33185581 35105408 36367760 36745280 37130720 39041860 40843792 43881760 48051520 48269936 51054740 56788160 58188416 60337420 62466976 66371162 72735520 73490560 74261440 78083720 81687584 87763520 96103040 96539872 102109480 113576320 120674840 124933952 132742324 145471040 148522880 156167440 163375168 165927905 175527040 193079744 204218960 241349680 249867904 265484648 290942080 312334880 326750336 331855810 386159488 408437920 482699360 530969296 624669760 663711620 816875840 965398720 1061938592 1249339520 1327423240 1633751680 1930797440 2123877184 2654846480 4247754368 5309692960 10619385920 21238771840
• Sum of all divisors σ(n): 64720401480
• Sum of proper divisors (its aliquot sum) s(n): 43481629640
• 21238771840 is an abundant number, because the sum of its proper divisors (43481629640) is greater than itself. Its abundance is 22242857800

Bases of 21238771840

• Binary: 10011110001111011011111000010000000₂
• Hexadecimal: 0x4F1EDF080
• Base-36: 9R90L8G

Squares and roots of 21238771840

• 21238771840 squared (21238771840²) is 451085429271576985600
• 21238771840 cubed (21238771840³) is 9580500512647480994153365504000
• The square root of 21238771840 is 145735.2800113961
• The cube root of 21238771840 is 2769.3411979643

Scales and comparisons

• 21,238,771,840 seconds is equal to 675 years, 17 weeks, 2 hours, 50 minutes, 40 seconds.
• To count from 1 to 21,238,771,840 would take you about one thousand, three hundred fifty 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 21238771840 cubic inches would be around 230.8 feet tall.

Recreational maths with 21238771840

• 21238771840 backwards is 04817783212
• The number of decimal digits it has is: 11
• The sum of 21238771840's digits is 43
• More coming soon!