21312861108

Names of 21312861108

• Cardinal: 21312861108 can be written as Twenty-one billion, three hundred twelve million, eight hundred sixty-one thousand, one hundred eight.

Scientific notation

• Scientific notation: 2.1312861108 × 10¹⁰

Factors of 21312861108

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 248

Divisors of 21312861108

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 11 12 14 19 21 22 28 33 38 42 44 57 66 76 77 79 84 114 121 127 132 133 154 158 209 228 231 237 242 254 266 308 316 363 381 399 418 462 474 484 508 532 553 627 726 762 798 836 847 869 889 924 948 1106 1254 1331 1397 1452 1463 1501 1524 1596 1659 1694 1738 1778 2212 2299 2413 2508 2541 2607 2662 2667 2794 2926 3002 3318 3388 3476 3556 3993 4191 4389 4503 4598 4826 5082 5214 5324 5334 5588 5852 6004 6083 6636 6897 7239 7986 8382 8778 9006 9196 9317 9559 9652 9779 10033 10164 10428 10507 10668 12166 13794 14478 15367 15972 16093 16511 16764 16891 17556 18012 18249 18634 19118 19558 20066 21014 24332 25289 26543 27588 27951 28677 28956 29337 30099 30734 31521 32186 33022 33782 36498 37268 38236 39116 40132 42028 46101 48279 49533 50578 50673 53086 55902 57354 58674 60198 61468 63042 64372 66044 66913 67564 70231 72996 75867 79629 92202 96558 99066 101156 101346 105149 106172 107569 110363 111804 114708 115577 117348 120396 126084 133826 140462 151734 159258 169037 177023 181621 184404 185801 190627 193116 198132 200739 202692 210298 210693 215138 220726 231154 267652 280924 291973 303468 315447 318516 322707 331089 338074 346731 354046 363242 371602 381254 401478 420596 421386 430276 441452 462308 507111 531069 544863 557403 571881 583946 630894 645414 662178 676148 693462 708092 726484 736043 743204 762508 772541 802956 842772 875919 1014222 1062138 1089726 1114806 1143762 1167892 1183259 1213993 1261788 1271347 1290828 1324356 1334389 1386924 1472086 1545082 1751838 1997831 2028444 2043811 2096897 2124276 2179452 2208129 2229612 2287524 2317623 2366518 2427986 2542694 2668778 2944172 3090164 3211703 3503676 3549777 3641979 3814041 3995662 4003167 4087622 4193794 4416258 4635246 4733036 4855972 5085388 5337556 5993493 6131433 6290691 6423406 7099554 7283958 7628082 7991324 8006334 8175244 8387588 8497951 8832516 9270492 9635109 11986986 12262866 12581382 12846812 13353923 13984817 14199108 14567916 14678279 15256164 16012668 16995902 19270218 22481921 23065867 23973972 24525732 25162764 25493853 26707846 27969634 29356558 33991804 38540436 40061769 41954451 44034837 44963842 46131734 50987706 53415692 55939268 58713116 67445763 69197601 80123538 83908902 88069674 89927684 92263468 93477461 101975412 134891526 138395202 160247076 161461069 167817804 176139348 186954922 253724537 269783052 276790404 280432383 322922138 373909844 484383207 507449074 560864766 645844276 761173611 968766414 1014898148 1121729532 1522347222 1776071759 1937532828 3044694444 3552143518 5328215277 7104287036 10656430554 21312861108
• Sum of all divisors σ(n): 67161292800
• Sum of proper divisors (its aliquot sum) s(n): 45848431692
• 21312861108 is an abundant number, because the sum of its proper divisors (45848431692) is greater than itself. Its abundance is 24535570584

Bases of 21312861108

• Binary: 10011110110010110000111001110110100₂
• Hexadecimal: 0x4F65873B4
• Base-36: 9SH4KVO

Squares and roots of 21312861108

• 21312861108 squared (21312861108²) is 454238048608898987664
• 21312861108 cubed (21312861108³) is 9681112439970416736884637371712
• The square root of 21312861108 is 145989.2499740991
• The cube root of 21312861108 is 2772.5576479505

Scales and comparisons

• 21,312,861,108 seconds is equal to 677 years, 35 weeks, 3 days, 15 hours, 11 minutes, 48 seconds.
• To count from 1 to 21,312,861,108 would take you about one thousand, three hundred fifty-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 21312861108 cubic inches would be around 231 feet tall.

Recreational maths with 21312861108

• 21312861108 backwards is 80116821312
• 21312861108 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21312861108's digits is 33
• More coming soon!