640420791296

Names of 640420791296

• Cardinal: 640420791296 can be written as Six hundred forty billion, four hundred twenty million, seven hundred ninety-one thousand, two hundred ninety-six.

Scientific notation

• Scientific notation: 6.40420791296 × 10¹¹

Factors of 640420791296

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 611

Divisors of 640420791296

• Number of divisors d(n): 352
• Complete list of divisors:
  1 2 4 8 11 13 16 22 26 32 44 52 64 73 88 104 128 143 146 176 181 208 256 286 292 331 352 362 416 512 572 584 662 704 724 803 832 949 1024 1144 1168 1324 1408 1448 1606 1664 1898 1991 2288 2336 2353 2648 2816 2896 3212 3328 3641 3796 3982 4303 4576 4672 4706 5296 5632 5792 6424 6656 7282 7592 7964 8606 9152 9344 9412 10439 10592 11264 11584 12848 13213 13312 14564 15184 15928 17212 18304 18688 18824 20878 21184 23168 24163 25696 25883 26426 29128 30368 31856 34424 36608 37376 37648 41756 42368 46336 47333 48326 51392 51766 52852 58256 59911 60736 63712 68848 73216 74752 75296 83512 84736 92672 94666 96652 102784 103532 105704 116512 119822 121472 127424 137696 145343 146432 150592 167024 169472 171769 185344 189332 193304 205568 207064 211408 233024 239644 242944 254848 265793 275392 290686 301184 314119 334048 338944 343538 378664 386608 411136 414128 422816 466048 479288 485888 509696 531586 550784 581372 602368 628238 659021 668096 687076 757328 773216 778843 822272 828256 845632 932096 958576 971776 1019392 1063172 1101568 1162744 1204736 1256476 1318042 1336192 1374152 1514656 1546432 1557686 1656512 1691264 1864192 1889459 1917152 2038784 2126344 2203136 2325488 2409472 2512952 2636084 2672384 2748304 3029312 3092864 3115372 3313024 3382528 3455309 3728384 3778918 3834304 4252688 4373503 4406272 4650976 5025904 5272168 5344768 5496608 6058624 6185728 6230744 6626048 6765056 6910618 7557836 7668608 8505376 8567273 8747006 9301952 10051808 10544336 10689536 10993216 12117248 12371456 12461488 13252096 13530112 13821236 15115672 15337216 17010752 17134546 17494012 18603904 20103616 21088672 21986432 24234496 24742912 24922976 26504192 27642472 30231344 30674432 34021504 34269092 34988024 37207808 40207232 42177344 43972864 48108533 48468992 49845952 55284944 56855539 60462688 61348864 68043008 68538184 69976048 74415616 80414464 84354688 87945728 96217066 99691904 110569888 113711078 120925376 136086016 137076368 139952096 148831232 160828928 168709376 175891456 192434132 199383808 221139776 227422156 241850752 272172032 274152736 279904192 321657856 337418752 384868264 398767616 442279552 454844312 483701504 548305472 559808384 625410929 674837504 769736528 797535232 884559104 909688624 967403008 1096610944 1119616768 1250821858 1539473056 1769118208 1819377248 1934806016 2193221888 2239233536 2501643716 3078946112 3538236416 3638754496 4386443776 4478467072 5003287432 6157892224 7277508992 8772887552 10006574864 12315784448 14555017984 20013149728 24631568896 29110035968 40026299456 49263137792 58220071936 80052598912 160105197824 320210395648 640420791296
• Sum of all divisors σ(n): 1537688320896
• Sum of proper divisors (its aliquot sum) s(n): 897267529600
• 640420791296 is an abundant number, because the sum of its proper divisors (897267529600) is greater than itself. Its abundance is 256846738304

Bases of 640420791296

• Binary: 1001010100011100000011011100010000000000₂
• Hexadecimal: 0x951C0DC400
• Base-36: 867E054W

Squares and roots of 640420791296

• 640420791296 squared (640420791296²) is 410138789924194789359616
• 640420791296 cubed (640420791296³) is 262661408384436738857325319826702336
• The square root of 640420791296 is 800262.9513453687
• The cube root of 640420791296 is 8619.6270283623

Scales and comparisons

• 640,420,791,296 seconds is equal to 20,363 years, 20 weeks, 5 days, 16 hours, 14 minutes, 56 seconds.
• To count from 1 to 640,420,791,296 would take you about forty thousand, seven 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 640420791296 cubic inches would be around 718.3 feet tall.

Recreational maths with 640420791296

• 640420791296 backwards is 692197024046
• The number of decimal digits it has is: 12
• The sum of 640420791296's digits is 50
• More coming soon!