21108386208

Names of 21108386208

• Cardinal: 21108386208 can be written as Twenty-one billion, one hundred eight million, three hundred eighty-six thousand, two hundred eight.

Scientific notation

• Scientific notation: 2.1108386208 × 10¹⁰

Factors of 21108386208

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 8485

Divisors of 21108386208

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 32 39 41 42 48 49 52 56 78 82 84 91 96 98 104 112 123 147 156 164 168 182 196 208 224 246 273 287 294 312 328 336 364 392 416 492 533 546 574 588 624 637 656 672 728 784 861 984 1066 1092 1148 1176 1248 1274 1312 1456 1568 1599 1722 1911 1968 2009 2132 2184 2296 2352 2548 2912 3198 3444 3731 3822 3936 4018 4264 4368 4592 4704 5096 6027 6396 6888 7462 7644 8036 8419 8528 8736 9184 10192 11193 12054 12792 13776 14924 15288 16072 16838 17056 20384 22386 24108 25257 25584 26117 27552 29848 30576 32144 33676 44772 48216 50514 51168 52234 58933 59696 61152 64288 67352 78351 89544 96432 101028 104468 109447 117866 119392 134704 156702 176799 179088 192864 202056 208936 218894 235732 269408 313404 328341 345179 353598 358176 404112 412531 417872 437788 471464 626808 656682 690358 707196 766129 808224 825062 835744 875576 942928 1035537 1237593 1253616 1313364 1380716 1414392 1532258 1650124 1751152 1885856 2071074 2298387 2416253 2475186 2507232 2626728 2761432 2828784 3064516 3300248 3502304 4142148 4487327 4596774 4832506 4950372 5253456 5362903 5522864 5657568 6129032 6600496 7248759 8284296 8974654 9193548 9665012 9900744 10506912 10725806 11045728 12258064 13200992 13461981 14497518 16088709 16568592 16913771 17949308 18387096 19330024 19801488 21451612 24516128 26923962 28995036 31411289 32177418 33137184 33827542 35898616 36774192 38660048 39602976 42903224 50741313 53847924 57990072 62822578 64354836 67655084 71797232 73548384 77320096 85806448 94233867 101482626 107695848 115980144 125645156 128709672 135310168 143594464 171612896 188467734 202965252 215391696 219879023 231960288 251290312 257419344 270620336 376935468 405930504 430783392 439758046 502580624 514838688 541240672 659637069 753870936 811861008 879516092 1005161248 1319274138 1507741872 1623722016 1759032184 2638548276 3015483744 3518064368 5277096552 7036128736 10554193104 21108386208
• Sum of all divisors σ(n): 71115589440
• Sum of proper divisors (its aliquot sum) s(n): 50007203232
• 21108386208 is an abundant number, because the sum of its proper divisors (50007203232) is greater than itself. Its abundance is 28898817024

Bases of 21108386208

• Binary: 10011101010001010000110100110100000₂
• Hexadecimal: 0x4EA2869A0
• Base-36: 9P3DZ1C

Squares and roots of 21108386208

• 21108386208 squared (21108386208²) is 445563968306084619264
• 21108386208 cubed (21108386208³) is 9405136323373905699753148710912
• The square root of 21108386208 is 145287.2541140481
• The cube root of 21108386208 is 2763.6625310615

Scales and comparisons

• 21,108,386,208 seconds is equal to 671 years, 9 weeks, 3 days, 36 minutes, 48 seconds.
• To count from 1 to 21,108,386,208 would take you about one thousand, three hundred forty-two 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 21108386208 cubic inches would be around 230.3 feet tall.

Recreational maths with 21108386208

• 21108386208 backwards is 80268380112
• 21108386208 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21108386208's digits is 39
• More coming soon!