640611428688

Names of 640611428688

• Cardinal: 640611428688 can be written as Six hundred forty billion, six hundred eleven million, four hundred twenty-eight thousand, six hundred eighty-eight.

Scientific notation

• Scientific notation: 6.40611428688 × 10¹¹

Factors of 640611428688

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 714

Divisors of 640611428688

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 28 33 36 42 44 48 56 63 66 72 77 84 88 99 112 121 126 132 144 154 168 176 198 231 242 252 264 308 336 363 396 462 484 504 528 616 691 693 726 792 847 924 968 1008 1089 1232 1331 1382 1386 1452 1584 1694 1848 1936 2073 2178 2541 2662 2764 2772 2904 3388 3696 3993 4146 4356 4837 5082 5324 5528 5544 5808 6219 6776 7601 7623 7986 8292 8712 9317 9674 10164 10648 11056 11088 11979 12438 13552 14511 15202 15246 15972 16584 17424 18634 19348 20328 21296 22803 23958 24876 27951 29022 30404 30492 31944 33168 37268 38696 40656 43533 45606 47916 49752 53207 55902 58044 60808 60984 63888 68409 74536 77392 83611 83853 87066 91212 95832 99504 106414 111804 116088 121616 121968 136818 149072 159621 167222 167706 174132 182424 191664 212828 223608 232176 250833 273636 319242 334444 335412 348264 364848 425656 447216 477481 478863 501666 547272 585277 638484 668888 670824 696528 752499 851312 919721 954962 957726 1003332 1094544 1170554 1276968 1337776 1341648 1432443 1504998 1755831 1839442 1909924 1915452 2006664 2341108 2553936 2759163 2864886 3009996 3342367 3511662 3678884 3819848 3830904 4013328 4297329 4682216 5252291 5267493 5518326 5729772 6019992 6438047 6684734 7023324 7357768 7639696 7661808 8277489 8594658 9364432 10027101 10504582 10534986 11036652 11459544 12039984 12876094 13369468 14046648 14715536 15756873 16554978 17189316 19314141 20054202 21009164 21069972 22073304 22919088 25752188 26738936 28093296 30081303 31513746 33109956 34378632 36766037 38628282 40108404 42018328 42139944 44146608 47270619 51504376 53477872 57775201 57942423 60162606 63027492 66219912 68757264 73532074 77256564 80216808 84036656 84279888 94541238 103008752 110298111 115550402 115884846 120325212 126054984 132439824 147064148 154513128 160433616 173325603 189082476 220596222 231100804 231769692 240650424 252109968 294128296 309026256 330894333 346651206 378164952 404426407 441192444 462201608 463539384 481300848 519976809 588256592 635527211 661788666 693302412 756329904 808852814 882384888 924403216 927078768 1039953618 1213279221 1271054422 1323577332 1386604824 1617705628 1764769776 1906581633 2079907236 2426558442 2542108844 2647154664 2773209648 3235411256 3639837663 3813163266 4159814472 4448690477 4853116884 5084217688 5294309328 5719744899 6470822512 7279675326 7626326532 8319628944 8897380954 9706233768 10168435376 11439489798 13346071431 14559350652 15252653064 17794761908 19412467536 22878979596 26692142862 29118701304 30505306128 35589523816 40038214293 45757959192 53384285724 58237402608 71179047632 80076428586 91515918384 106768571448 160152857172 213537142896 320305714344 640611428688
• Sum of all divisors σ(n): 2256945956928
• Sum of proper divisors (its aliquot sum) s(n): 1616334528240
• 640611428688 is an abundant number, because the sum of its proper divisors (1616334528240) is greater than itself. Its abundance is 975723099552

Bases of 640611428688

• Binary: 1001010100100111011010101010100101010000₂
• Hexadecimal: 0x95276AA950
• Base-36: 86AJI5W0

Squares and roots of 640611428688

• 640611428688 squared (640611428688²) is 410383002565680509401344
• 640611428688 cubed (640611428688³) is 262896041582871760684550595427356672
• The square root of 640611428688 is 800382.0517028103
• The cube root of 640611428688 is 8620.4822265991

Scales and comparisons

• 640,611,428,688 seconds is equal to 20,369 years, 24 weeks, 3 hours, 4 minutes, 48 seconds.
• To count from 1 to 640,611,428,688 would take you about forty thousand, seven hundred thirty-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 640611428688 cubic inches would be around 718.4 feet tall.

Recreational maths with 640611428688

• 640611428688 backwards is 886824116046
• The number of decimal digits it has is: 12
• The sum of 640611428688's digits is 54
• More coming soon!