21356573940

Names of 21356573940

• Cardinal: 21356573940 can be written as Twenty-one billion, three hundred fifty-six million, five hundred seventy-three thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.135657394 × 10¹⁰

Factors of 21356573940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 7603

Divisors of 21356573940

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 27 30 31 36 39 45 52 54 60 62 65 78 90 93 108 117 124 130 135 155 156 169 180 186 195 234 260 270 279 310 338 351 372 390 403 465 468 507 540 558 585 620 676 702 780 806 837 845 930 1014 1116 1170 1209 1395 1404 1521 1612 1674 1690 1755 1860 2015 2028 2340 2418 2535 2790 3042 3348 3380 3510 3627 4030 4185 4563 4836 5070 5239 5580 6045 6084 7020 7254 7549 7605 8060 8370 9126 10140 10478 10881 12090 14508 15098 15210 15717 16740 18135 18252 20956 21762 22647 22815 24180 26195 30196 30420 31434 36270 37745 43524 45294 45630 47151 52390 54405 62868 67941 72540 75490 78585 90588 91260 94302 98137 104780 108810 113235 135882 141453 150980 157170 188604 196274 203823 217620 226470 234019 235755 271764 282906 294411 314340 339705 392548 407646 452940 468038 471510 490685 565812 588822 679410 702057 707265 815292 883233 936076 943020 981370 1019115 1170095 1177644 1275781 1358820 1404114 1414530 1472055 1766466 1962740 2038230 2106171 2340190 2551562 2649699 2808228 2829060 2944110 3042247 3510285 3532932 3827343 4076460 4212342 4416165 4680380 5103124 5299398 5888220 6084494 6318513 6378905 7020570 7654686 8424684 8832330 9126741 10530855 10598796 11482029 12168988 12637026 12757810 13248495 14041140 15211235 15309372 17664660 18253482 19136715 21061710 22964058 25274052 25515620 26496990 27380223 30422470 31592565 34446087 36506964 38273430 39549211 42123420 45633705 45928116 52993980 54760446 57410145 60844940 63185130 68892174 76546860 79098422 82140669 91267410 109520892 114820290 118647633 126370260 136901115 137784348 158196844 164281338 172230435 182534820 197746055 229640580 237295266 273802230 328562676 344460870 355942899 395492110 410703345 474590532 547604460 593238165 688921740 711885798 790984220 821406690 1067828697 1186476330 1423771596 1642813380 1779714495 2135657394 2372952660 3559428990 4271314788 5339143485 7118857980 10678286970 21356573940
• Sum of all divisors σ(n): 74277504000
• Sum of proper divisors (its aliquot sum) s(n): 52920930060
• 21356573940 is an abundant number, because the sum of its proper divisors (52920930060) is greater than itself. Its abundance is 31564356120

Bases of 21356573940

• Binary: 10011111000111100110111010011110100₂
• Hexadecimal: 0x4F8F374F4
• Base-36: 9T75HX0

Squares and roots of 21356573940

• 21356573940 squared (21356573940²) is 456103250454687123600
• 21356573940 cubed (21356573940³) is 9740802792609864174729318984000
• The square root of 21356573940 is 146138.8857901961
• The cube root of 21356573940 is 2774.4518654397

Scales and comparisons

• 21,356,573,940 seconds is equal to 679 years, 3 weeks, 5 days, 13 hours, 39 minutes.
• To count from 1 to 21,356,573,940 would take you about one thousand, three hundred fifty-eight 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 21356573940 cubic inches would be around 231.2 feet tall.

Recreational maths with 21356573940

• 21356573940 backwards is 04937565312
• 21356573940 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21356573940's digits is 45
• More coming soon!