640938591090

Names of 640938591090

• Cardinal: 640938591090 can be written as Six hundred forty billion, nine hundred thirty-eight million, five hundred ninety-one thousand and ninety.

Scientific notation

• Scientific notation: 6.4093859109 × 10¹¹

Factors of 640938591090

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 4446

Divisors of 640938591090

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 43 45 49 63 70 86 90 98 105 113 126 129 147 210 215 226 245 258 294 301 315 339 343 387 430 441 490 565 602 630 645 678 686 735 774 791 882 903 1017 1029 1130 1290 1470 1505 1582 1695 1715 1806 1935 2034 2058 2107 2205 2373 2709 3010 3087 3390 3430 3870 3955 4214 4273 4410 4515 4746 4859 5085 5145 5418 5537 6174 6321 7119 7910 8546 9030 9718 10170 10290 10535 11074 11865 12642 12819 13545 14238 14577 14749 15435 16611 18963 21070 21365 23730 24295 25638 27090 27685 29154 29498 29911 30870 31605 33222 34013 35595 37926 38457 38759 42730 43731 44247 48590 49833 55370 59822 63210 64095 68026 71190 72885 73745 76914 77518 83055 87462 88494 89733 94815 99666 102039 116277 128190 132741 145770 147490 149555 166110 170065 179466 183739 189630 192285 193795 204078 209377 218655 221235 232554 238091 249165 265482 269199 299110 306117 340130 348831 367478 384570 387590 418754 437310 442470 448665 476182 482849 498330 510195 538398 551217 581385 612234 628131 663705 697662 714273 897330 918695 965698 1020390 1046885 1102434 1162770 1190455 1256262 1286173 1327410 1345995 1428546 1448547 1465639 1530585 1653651 1666637 1744155 1837390 1884393 2093770 2142819 2380910 2414245 2572346 2691990 2756085 2897094 2931278 3061170 3140655 3307302 3333274 3379943 3488310 3571365 3768786 3858519 4285638 4345641 4396917 4828490 4999911 5512170 6281310 6430865 6759886 7142730 7242735 7328195 7717038 8268255 8333185 8691282 8793834 9003211 9421965 9999822 10139829 10714095 11575557 12861730 13190751 14485470 14656390 14999733 16536510 16666370 16899715 18006422 18843930 19292595 20279658 20762507 21428190 21728205 21984585 23151114 23659601 24999555 26381502 27009633 29999466 30419487 33799430 38585190 41525014 43456410 43969170 45016055 47319202 49999110 50699145 54019266 57877785 60838974 62287521 63022477 65953755 70978803 74998665 81028899 90032110 101398290 103812535 115755570 118298005 124575042 126044954 131907510 135048165 141957606 145337549 149997330 152097435 162057798 165617207 186862563 189067431 207625070 212936409 236596010 270096330 290675098 304194870 311437605 315112385 331234414 354894015 373725126 378134862 405144495 425872818 436012647 496851621 567202293 622875210 630224770 709788030 726687745 810288990 828086035 872025294 934312815 945337155 993703242 1017362843 1064682045 1134404586 1308037941 1453375490 1490554863 1656172070 1868625630 1890674310 2034725686 2129364090 2180063235 2484258105 2616075882 2836011465 2981109726 3052088529 4360126470 4968516210 5086814215 5672022930 6104177058 6540189705 7121539901 7452774315 9156265587 10173628430 13080379410 14243079802 14905548630 15260442645 18312531174 21364619703 30520885290 35607699505 42729239406 45781327935 64093859109 71215399010 91562655870 106823098515 128187718218 213646197030 320469295545 640938591090
• Sum of all divisors σ(n): 2006632742400
• Sum of proper divisors (its aliquot sum) s(n): 1365694151310
• 640938591090 is an abundant number, because the sum of its proper divisors (1365694151310) is greater than itself. Its abundance is 724755560220

Bases of 640938591090

• Binary: 1001010100111010111010101100001101110010₂
• Hexadecimal: 0x953AEAC372
• Base-36: 86FYAE0I

Squares and roots of 640938591090

• 640938591090 squared (640938591090²) is 410802277548434227388100
• 640938591090 cubed (640938591090³) is 263299032988456572937661504632029000
• The square root of 640938591090 is 800586.4045123425
• The cube root of 640938591090 is 8621.9494798979

Scales and comparisons

• 640,938,591,090 seconds is equal to 20,379 years, 44 weeks, 6 days, 17 hours, 31 minutes, 30 seconds.
• To count from 1 to 640,938,591,090 would take you about forty thousand, seven hundred fifty-nine 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 640938591090 cubic inches would be around 718.5 feet tall.

Recreational maths with 640938591090

• 640938591090 backwards is 090195839046
• The number of decimal digits it has is: 12
• The sum of 640938591090's digits is 54
• More coming soon!