21005819604

Names of 21005819604

• Cardinal: 21005819604 can be written as Twenty-one billion, five million, eight hundred nineteen thousand, six hundred four.

Scientific notation

• Scientific notation: 2.1005819604 × 10¹⁰

Factors of 21005819604

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 844

Divisors of 21005819604

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 28 31 33 36 42 44 47 49 62 63 66 77 84 93 94 98 99 124 126 132 141 147 154 186 188 196 198 217 231 252 279 282 294 308 329 341 372 396 423 434 441 462 517 539 558 564 588 651 658 682 693 743 846 868 882 924 987 1023 1034 1078 1116 1302 1316 1364 1386 1457 1486 1519 1551 1617 1692 1764 1953 1974 2046 2068 2156 2229 2303 2387 2604 2772 2914 2961 2972 3038 3069 3102 3234 3619 3906 3948 4092 4371 4458 4557 4606 4653 4774 4851 5201 5828 5922 6076 6138 6204 6468 6687 6909 7161 7238 7812 8173 8742 8916 9114 9212 9306 9548 9702 10199 10402 10857 11844 12276 13113 13374 13671 13818 14322 14476 15603 16027 16346 16709 17484 18228 18612 19404 20398 20727 20804 21483 21714 23033 24519 25333 26226 26748 27342 27636 28644 30597 31206 32054 32571 32692 33418 34921 36407 40796 41454 42966 43428 46066 46809 48081 49038 50127 50666 52452 54684 57211 61194 62412 64108 65142 66836 69099 69842 71393 72814 73557 75999 82908 85932 91791 92132 93618 96162 98076 100254 101332 104763 109221 112189 114422 122388 130284 138198 139684 142786 144243 145628 147114 150381 151998 161231 171633 183582 187236 192324 200508 207297 209526 214179 218442 224378 227997 228844 244447 253363 276396 285572 288486 294228 300762 303996 314289 322462 327663 336567 343266 367164 384131 400477 414594 419052 428358 436884 448756 455994 483693 488894 506726 514899 576972 601524 628578 642537 644924 655326 673134 686532 733341 760089 768262 785323 800954 829188 856716 911988 967386 977788 1009701 1013452 1029798 1082551 1128617 1152393 1201431 1257156 1285074 1310652 1346268 1451079 1466682 1520178 1536524 1570646 1601908 1711129 1773541 1934772 2019402 2059596 2165102 2200023 2257234 2280267 2304786 2355969 2402862 2570148 2688917 2902158 2933364 3040356 3141292 3247653 3385851 3422258 3457179 3547082 3604293 4038804 4330204 4400046 4514468 4560534 4609572 4711938 4805724 5133387 5320623 5377834 5804316 6495306 6771702 6844516 6914358 7067907 7094164 7208586 7577857 8066751 8800092 9121068 9423876 9742959 10157553 10266774 10641246 10755668 11908061 12414787 12990612 13543404 13828716 14135814 14417172 15155714 15400161 15961869 16133502 18822419 19485918 20315106 20533548 21282492 22733571 23816122 24200253 24829574 28271628 30311428 30800322 31923738 32267004 35724183 37244361 37644838 38971836 40630212 45467142 47632244 48400506 49659148 53044999 56467257 61600644 63847476 68200713 71448366 74488722 75289676 83356427 90934284 96801012 106089998 107172549 111733083 112934514 136401426 142896732 148977444 159134997 166712854 169401771 212179996 214345098 223466166 225869028 250069281 272802852 318269994 333425708 338803542 428690196 446932332 477404991 500138562 583494989 636539988 677607084 750207843 954809982 1000277124 1166989978 1500415686 1750484967 1909619964 2333979956 3000831372 3500969934 5251454901 7001939868 10502909802 21005819604
• Sum of all divisors σ(n): 71131447296
• Sum of proper divisors (its aliquot sum) s(n): 50125627692
• 21005819604 is an abundant number, because the sum of its proper divisors (50125627692) is greater than itself. Its abundance is 29119808088

Bases of 21005819604

• Binary: 10011100100000010110101111011010100₂
• Hexadecimal: 0x4E40B5ED4
• Base-36: 9NEBM50

Squares and roots of 21005819604

• 21005819604 squared (21005819604²) is 441244457235790716816
• 21005819604 cubed (21005819604³) is 9268701469959912289734745260864
• The square root of 21005819604 is 144933.8456124035
• The cube root of 21005819604 is 2759.1790075437

Scales and comparisons

• 21,005,819,604 seconds is equal to 667 years, 47 weeks, 5 days, 21 hours, 53 minutes, 24 seconds.
• To count from 1 to 21,005,819,604 would take you about one thousand, three hundred thirty-five 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 21005819604 cubic inches would be around 229.9 feet tall.

Recreational maths with 21005819604

• 21005819604 backwards is 40691850012
• 21005819604 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21005819604's digits is 36
• More coming soon!