640440142560

Names of 640440142560

• Cardinal: 640440142560 can be written as Six hundred forty billion, four hundred forty million, one hundred forty-two thousand, five hundred sixty.

Scientific notation

• Scientific notation: 6.4044014256 × 10¹¹

Factors of 640440142560

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 7822

Divisors of 640440142560

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 72 80 90 96 108 120 135 139 144 160 180 216 240 270 278 288 360 417 432 480 540 556 695 720 834 864 1080 1112 1251 1390 1440 1668 2085 2160 2224 2502 2780 3336 3753 4170 4320 4448 5004 5560 6255 6672 7506 7673 8340 10008 11120 12510 13344 15012 15346 16680 18765 19321 20016 22240 23019 25020 30024 30692 33360 37530 38365 38642 40032 46038 50040 57963 60048 61384 66720 69057 75060 76730 77284 92076 96605 100080 115095 115926 120096 122768 138114 150120 153460 154568 173889 184152 193210 200160 207171 230190 231852 245536 276228 289815 300240 306920 309136 345285 347778 368304 386420 414342 460380 463704 521667 552456 579630 600480 613840 618272 690570 695556 736608 772840 828684 869445 920760 927408 1035855 1043334 1066547 1104912 1159260 1227680 1381140 1391112 1545680 1657368 1738890 1841520 1854816 2071710 2086668 2133094 2209824 2318520 2608335 2762280 2782224 3091360 3199641 3314736 3477780 3683040 4143420 4173336 4266188 4637040 5216670 5332735 5524560 5564448 6399282 6629472 6955560 8286840 8346672 8532376 9274080 9598923 10433340 10665470 11049120 12798564 13911120 15998205 16573680 16693344 17064752 19197846 20866680 21330940 25597128 27822240 28796769 31996410 33147360 34129504 38395692 41733360 42661880 47994615 51194256 57593538 63992820 76791384 83466720 85323760 95989230 102388512 115187076 127985640 143983845 148250033 153582768 170647520 191978460 230374152 255971280 287967690 296500066 307165536 383956920 444750099 460748304 511942560 575935380 593000132 741250165 767913840 889500198 921496608 1151870760 1186000264 1334250297 1482500330 1535827680 1779000396 2223750495 2303741520 2372000528 2668500594 2965000660 3558000792 4002750891 4447500990 4607483040 4744001056 5337001188 5930001320 6671251485 7116001584 8005501782 8895001980 10674002376 11860002640 13342502970 14232003168 16011003564 17790003960 20013754455 21348004752 23720005280 26685005940 32022007128 35580007920 40027508910 42696009504 53370011880 64044014256 71160015840 80055017820 106740023760 128088028512 160110035640 213480047520 320220071280 640440142560
• Sum of all divisors σ(n): 2258076955680
• Sum of proper divisors (its aliquot sum) s(n): 1617636813120
• 640440142560 is an abundant number, because the sum of its proper divisors (1617636813120) is greater than itself. Its abundance is 977196670560

Bases of 640440142560

• Binary: 1001010100011101001101010000101011100000₂
• Hexadecimal: 0x951D350AE0
• Base-36: 867PIWO0

Squares and roots of 640440142560

• 640440142560 squared (640440142560²) is 410163576202273123353600
• 640440142560 cubed (640440142560³) is 262685219215903222516636049289216000
• The square root of 640440142560 is 800275.0418199983
• The cube root of 640440142560 is 8619.7138457591

Scales and comparisons

• 640,440,142,560 seconds is equal to 20,364 years, 5 days, 15 hours, 36 minutes.
• To count from 1 to 640,440,142,560 would take you about forty thousand, seven hundred twenty-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 640440142560 cubic inches would be around 718.3 feet tall.

Recreational maths with 640440142560

• 640440142560 backwards is 065241044046
• 640440142560 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640440142560's digits is 36
• More coming soon!