21345513984

Names of 21345513984

• Cardinal: 21345513984 can be written as Twenty-one billion, three hundred forty-five million, five hundred thirteen thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 2.1345513984 × 10¹⁰

Factors of 21345513984

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 285

Divisors of 21345513984

• Number of divisors d(n): 300
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 47 48 54 64 72 81 94 96 108 128 141 144 162 188 192 216 233 256 282 288 324 376 384 423 432 466 512 564 576 648 699 752 768 846 864 932 1128 1152 1269 1296 1398 1504 1536 1692 1728 1864 2097 2209 2256 2304 2538 2592 2796 3008 3384 3456 3728 3807 4194 4418 4512 4608 5076 5184 5592 6016 6291 6627 6768 6912 7456 7614 8388 8836 9024 10152 10368 10951 11184 12032 12582 13254 13536 13824 14912 15228 16776 17672 18048 18873 19881 20304 20736 21902 22368 24064 25164 26508 27072 29824 30456 32853 33552 35344 36096 37746 39762 40608 41472 43804 44736 50328 53016 54144 59643 59648 60912 65706 67104 70688 72192 75492 79524 81216 87608 89472 98559 100656 106032 108288 119286 119296 121824 131412 134208 141376 150984 159048 162432 175216 178929 178944 197118 201312 212064 216576 238572 243648 262824 268416 282752 295677 301968 318096 324864 350432 357858 357888 394236 402624 424128 477144 487296 514697 525648 536832 565504 591354 603936 636192 649728 700864 715716 788472 805248 848256 887031 954288 974592 1029394 1051296 1073664 1131008 1182708 1207872 1272384 1401728 1431432 1544091 1576944 1610496 1696512 1774062 1908576 1949184 2058788 2102592 2365416 2415744 2544768 2803456 2862864 3088182 3153888 3220992 3393024 3548124 3817152 4117576 4205184 4632273 4730832 4831488 5089536 5606912 5725728 6176364 6307776 7096248 7634304 8235152 8410368 9264546 9461664 9662976 10179072 11451456 12352728 12615552 13896819 14192496 15268608 16470304 16820736 18529092 18923328 22902912 24705456 25231104 27793638 28384992 30537216 32940608 37058184 37846656 41690457 45805824 49410912 50462208 55587276 56769984 65881216 74116368 75693312 83380914 91611648 98821824 111174552 113539968 131762432 148232736 151386624 166761828 197643648 222349104 227079936 263524864 296465472 333523656 395287296 444698208 454159872 592930944 667047312 790574592 889396416 1185861888 1334094624 1778792832 2371723776 2668189248 3557585664 5336378496 7115171328 10672756992 21345513984
• Sum of all divisors σ(n): 65374506054
• Sum of proper divisors (its aliquot sum) s(n): 44028992070
• 21345513984 is an abundant number, because the sum of its proper divisors (44028992070) is greater than itself. Its abundance is 22683478086

Bases of 21345513984

• Binary: 10011111000010010101011001000000000₂
• Hexadecimal: 0x4F84AB200
• Base-36: 9T0KG00

Squares and roots of 21345513984

• 21345513984 squared (21345513984²) is 455630967241139552256
• 21345513984 cubed (21345513984³) is 9725677182789190212775946747904
• The square root of 21345513984 is 146101.0403248383
• The cube root of 21345513984 is 2773.9728464395

Scales and comparisons

• 21,345,513,984 seconds is equal to 678 years, 37 weeks, 3 days, 13 hours, 26 minutes, 24 seconds.
• To count from 1 to 21,345,513,984 would take you about one thousand, three hundred fifty-seven 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 21345513984 cubic inches would be around 231.2 feet tall.

Recreational maths with 21345513984

• 21345513984 backwards is 48931554312
• The number of decimal digits it has is: 11
• The sum of 21345513984's digits is 45
• More coming soon!