21720430108

Names of 21720430108

• Cardinal: 21720430108 can be written as Twenty-one billion, seven hundred twenty million, four hundred thirty thousand, one hundred eight.

Scientific notation

• Scientific notation: 2.1720430108 × 10¹⁰

Factors of 21720430108

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 346

Divisors of 21720430108

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 13 19 26 38 41 52 53 67 76 82 106 134 151 164 212 247 268 302 494 533 604 689 779 871 988 1007 1066 1273 1378 1558 1742 1963 2014 2132 2173 2546 2747 2756 2869 3116 3484 3551 3926 4028 4346 5092 5494 5738 6191 7102 7852 8003 8692 10117 10127 10988 11476 12382 13091 14204 16006 16549 20234 20254 24764 26182 28249 32012 33098 35711 37297 40468 40508 41287 46163 52193 52364 56498 66196 67469 71422 74594 80483 82574 92326 104039 104386 112996 117629 131521 134938 142844 145591 149188 152057 160966 165148 184652 192223 208078 208772 235258 263042 269876 291182 304114 321932 328123 384446 414797 416156 470516 526084 536201 536731 582364 608228 656246 678509 768892 829594 877097 1072402 1073462 1312492 1357018 1529177 1659188 1754194 1892683 1976741 2144804 2146924 2498899 2714036 2766229 3058354 3508388 3785366 3953482 4265599 4997798 5392361 5532458 6116708 6234337 6970613 7570732 7881143 7906964 8531198 9995596 10187819 10784722 11064916 12468674 13941226 15762286 17062396 20375638 21569444 21984241 24937348 27882452 31524572 35960977 40751276 43968482 71921954 81046381 87936964 102454859 132441647 143843908 162092762 204909718 264883294 285795133 324185524 409819436 417700579 529766588 571590266 835401158 1143180532 1670802316 5430107527 10860215054 21720430108
• Sum of all divisors σ(n): 45946414080
• Sum of proper divisors (its aliquot sum) s(n): 24225983972
• 21720430108 is an abundant number, because the sum of its proper divisors (24225983972) is greater than itself. Its abundance is 2505553864

Bases of 21720430108

• Binary: 10100001110101000110111011000011100₂
• Hexadecimal: 0x50EA3761C
• Base-36: 9Z7S74S

Squares and roots of 21720430108

• 21720430108 squared (21720430108²) is 471777084076512891664
• 21720430108 cubed (21720430108³) is 10247201181239937987748887819712
• The square root of 21720430108 is 147378.5266176861
• The cube root of 21720430108 is 2790.1195166403

Scales and comparisons

• 21,720,430,108 seconds is equal to 690 years, 33 weeks, 2 days, 20 hours, 48 minutes, 28 seconds.
• To count from 1 to 21,720,430,108 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 21720430108 cubic inches would be around 232.5 feet tall.

Recreational maths with 21720430108

• 21720430108 backwards is 80103402712
• The number of decimal digits it has is: 11
• The sum of 21720430108's digits is 28
• More coming soon!