638428041346373685

Names of 638428041346373685

• Cardinal: 638428041346373685 can be written as Six hundred thirty-eight quadrillion, four hundred twenty-eight trillion, forty-one billion, three hundred forty-six million, three hundred seventy-three thousand, six hundred eighty-five.

Scientific notation

• Scientific notation: 6.38428041346373685 × 10¹⁷

Factors of 638428041346373685

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 7776

Divisors of 638428041346373685

• Number of divisors d(n): 336
• Complete list of divisors:
  1 3 5 9 11 15 27 33 45 55 81 99 121 135 165 243 297 363 405 495 605 729 891 1089 1215 1331 1485 1815 2187 2673 3267 3645 3993 4455 5445 6561 6655 7757 8019 9801 10935 11979 13365 16335 19683 19965 23271 24057 29403 32805 35937 38785 40095 49005 59049 59895 69813 72171 85327 88209 98415 107811 116355 120285 147015 177147 179685 209439 216513 255981 264627 295245 323433 349065 360855 426635 441045 531441 539055 628317 649539 767943 793881 885735 938597 970299 1047195 1082565 1279905 1323135 1594323 1617165 1884951 1948617 2303829 2381643 2657205 2815791 2910897 3141585 3247695 3839715 3969405 4692985 4851495 5654853 5845851 6911487 7144929 7971615 8447373 8732691 9424755 9743085 10324567 11519145 11908215 14078955 14554485 16964559 17537553 20734461 21434787 25342119 26198073 28274265 29229255 30973701 34557435 35724645 42236865 43663455 50893677 51622835 60171049 62203383 64304361 76026357 78594219 84822795 87687765 92921103 103672305 107173935 126710595 130990365 152681031 154868505 180513147 186610149 192913083 228079071 235782657 254468385 278763309 300855245 311016915 321521805 380131785 392971095 458043093 464605515 541539441 559830447 661881539 684237213 707347971 763405155 836289927 902565735 933050745 964565415 1140395355 1178913285 1374129279 1393816545 1624618323 1679491341 1985644617 2052711639 2122043913 2290215465 2508869781 2707697205 2799152235 3309407695 3421186065 3536739855 4122387837 4181449635 4873854969 5038474023 5956933851 6158134917 6870646395 7280696929 7526609343 8123091615 8397456705 9928223085 10263558195 10610219565 12367163511 12544348905 14621564907 15115422069 17870801553 18474404751 20611939185 21842090787 22579828029 24369274845 25192370115 29784669255 30790674585 36403484645 37633046715 43864694721 45346266207 53612404659 55423214253 61835817555 65526272361 67739484087 73107824535 75577110345 80087666219 89354007765 92372023755 109210453935 112899140145 131594084163 136038798621 160837213977 166269642759 196578817083 203218452261 219323473605 226731331035 240262998657 268062023295 277116071265 327631361805 338697420435 394782252489 400438331095 482511641931 498808928277 589736451249 609655356783 657970420815 680193993105 720788995971 804186069885 831348213795 982894085415 1016092261305 1184346757467 1201314993285 1447534925793 1496426784831 1769209353747 1828966070349 1973911262445 2162366987913 2412558209655 2494044641385 2948682256245 3048276783915 3553040272401 3603944979855 4342604777379 5307628061241 5486898211047 5921733787335 6487100963739 7237674628965 7482133924155 8846046768735 9144830351745 10659120817203 10811834939565 13027814332137 15922884183723 16460694633141 17765201362005 19461302891217 21713023886895 26538140306205 27434491055235 31977362451609 32435504818695 39083442996411 47768652551169 53295604086015 58383908673651 65139071660685 79614420918615 82303473165705 95932087354827 97306514456085 117250328989233 143305957653507 159886812258045 175151726020953 195417214982055 238843262755845 291919543368255 351750986967699 429917872960521 479660436774135 525455178062859 586251644946165 716529788267535 875758630104765 1055252960903097 1289753618881563 1576365534188577 1758754934838495 2149589364802605 2627275890314295 3869260856644689 4729096602565731 5276264804515485 6448768094407815 7881827670942885 11607782569934067 14187289807697193 19346304283223445 23645483012828655 42561869423091579 58038912849670335 70936449038485965 127685608269274737 212809347115457895 638428041346373685
• Sum of all divisors σ(n): 1264163889435100992
• Sum of proper divisors (its aliquot sum) s(n): 625735848088727307
• 638428041346373685 is a deficient number, because the sum of its proper divisors (625735848088727307) is less than itself. Its deficiency is 12692193257646378

Bases of 638428041346373685

• Binary: 100011011100001001101110101111001011000110010101100000110101₂
• Hexadecimal: 0x8DC26EBCB195835
• Base-36: 4UM7UPA62YB9

Squares and roots of 638428041346373685

• 638428041346373685 squared (638428041346373685²) is 407590363977367027456976899660479225
• 638428041346373685 cubed (638428041346373685³) is 260217117745725976018682847730262584433223663029194125
• The square root of 638428041346373685 is 799016921.8147846491
• The cube root of 638428041346373685 is 861067.7387590825

Scales and comparisons

• 638,428,041,346,373,685 seconds is equal to 20,300,036,927 years, 11 weeks, 3 days, 22 hours, 54 minutes, 45 seconds.
• To count from 1 to 638,428,041,346,373,685 would take you about sixty billion, nine hundred million, one hundred ten thousand, seven 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 638428041346373685 cubic inches would be around 71755.6 feet tall.

Recreational maths with 638428041346373685

• 638428041346373685 backwards is 586373643140824836
• 638428041346373685 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 638428041346373685's digits is 81
• More coming soon!