18686428209792

Names of 18686428209792

• Cardinal: 18686428209792 can be written as Eighteen trillion, six hundred eighty-six billion, four hundred twenty-eight million, two hundred nine thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 1.8686428209792 × 10¹³

Factors of 18686428209792

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 40653810

Divisors of 18686428209792

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 27 28 32 36 38 42 48 54 56 57 63 64 72 76 84 96 108 112 114 126 128 133 144 152 168 171 189 192 216 224 228 252 266 288 304 336 342 378 384 399 432 448 456 504 513 532 576 608 672 684 756 798 864 896 912 1008 1026 1064 1152 1197 1216 1344 1368 1512 1596 1728 1824 2016 2052 2128 2394 2432 2688 2736 3024 3192 3456 3591 3648 4032 4104 4256 4788 5472 6048 6384 7182 7296 8064 8208 8512 9576 10944 12096 12768 14364 16416 17024 19152 21888 24192 25536 28728 32832 38304 51072 57456 65664 76608 114912 153216 229824 459648 40653779 81307558 121961337 162615116 243922674 284576453 325230232 365884011 487845348 569152906 650460464 731768022 772421801 853729359 975690696 1097652033 1138305812 1300920928 1463536044 1544843602 1707458718 1951381392 2195304066 2276611624 2317265403 2561188077 2601841856 2927072088 3089687204 3414917436 3902762784 4390608132 4553223248 4634530806 5122376154 5203683712 5406952607 5854144176 6179374408 6829834872 6951796209 7683564231 7805525568 8781216264 9106446496 9269061612 10244752308 10813905214 11708288352 12358748816 13659669744 13903592418 15367128462 15611051136 16220857821 17562432528 18212892992 18538123224 20489504616 20855388627 21627810428 23416576704 24717497632 27319339488 27807184836 30734256924 32441715642 35124865056 36425785984 37076246448 40979009232 41710777254 43255620856 46833153408 48662573463 49434995264 54638678976 55614369672 61468513848 64883431284 70249730112 74152492896 81958018464 83421554508 86511241712 97325146926 98869990528 109277357952 111228739344 122937027696 129766862568 140499460224 145987720389 148304985792 163916036928 166843109016 173022483424 194650293852 222457478688 245874055392 259533725136 291975440778 296609971584 327832073856 333686218032 346044966848 389300587704 444914957376 491748110784 519067450272 583950881556 667372436064 692089933696 778601175408 889829914752 983496221568 1038134900544 1167901763112 1334744872128 1557202350816 2076269801088 2335803526224 2669489744256 3114404701632 4671607052448 6228809403264 9343214104896 18686428209792
• Sum of all divisors σ(n): 66346968960000
• Sum of proper divisors (its aliquot sum) s(n): 47660540750208
• 18686428209792 is an abundant number, because the sum of its proper divisors (47660540750208) is greater than itself. Its abundance is 28974112540416

Bases of 18686428209792

• Binary: 100001111111011000101111010100110001010000000₂
• Hexadecimal: 0x10FEC5EA6280
• Base-36: 6MGFCVXC0

Squares and roots of 18686428209792

• 18686428209792 squared (18686428209792²) is 349182599239710249964683264
• 18686428209792 cubed (18686428209792³) is 6524975572801416186524349116131823321088
• The square root of 18686428209792 is 4322780.1482138781
• The cube root of 18686428209792 is 26536.4057405927

Scales and comparisons

• 18,686,428,209,792 seconds is equal to 594,170 years, 32 weeks, 6 hours, 43 minutes, 12 seconds.
• To count from 1 to 18,686,428,209,792 would take you about one million, four hundred eighty-five thousand, four hundred twenty-six 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 18686428209792 cubic inches would be around 2211.4 feet tall.

Recreational maths with 18686428209792

• 18686428209792 backwards is 29790282468681
• 18686428209792 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18686428209792's digits is 72
• More coming soon!