128120688640

Names of 128120688640

• Cardinal: 128120688640 can be written as One hundred twenty-eight billion, one hundred twenty million, six hundred eighty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.2812068864 × 10¹¹

Factors of 128120688640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 399

Divisors of 128120688640

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 31 32 35 40 56 62 64 70 80 112 124 127 128 140 155 160 217 224 227 248 254 256 280 310 320 434 448 454 496 508 512 560 620 635 640 868 889 896 908 992 1016 1024 1085 1120 1135 1240 1270 1280 1589 1736 1778 1792 1816 1984 2032 2048 2170 2240 2270 2480 2540 2560 3178 3472 3556 3584 3632 3937 3968 4064 4096 4340 4445 4480 4540 4960 5080 5120 6356 6944 7037 7112 7168 7264 7874 7936 7945 8128 8680 8890 8960 9080 9920 10160 10240 12712 13888 14074 14224 14336 14528 15748 15872 15890 16256 17360 17780 17920 18160 19685 19840 20320 20480 25424 27559 27776 28148 28448 28672 28829 29056 31496 31744 31780 32512 34720 35185 35560 35840 36320 39370 39680 40640 49259 50848 55118 55552 56296 56896 57658 58112 62992 63488 63560 65024 69440 70370 71120 71680 72640 78740 79360 81280 98518 101696 110236 111104 112592 113792 115316 116224 125984 126976 127120 130048 137795 138880 140740 142240 143360 144145 145280 157480 158720 162560 197036 201803 203392 220472 222208 225184 227584 230632 232448 246295 251968 254240 260096 275590 277760 281480 284480 288290 290560 314960 317440 325120 394072 403606 406784 440944 444416 450368 455168 461264 464896 492590 503936 508480 520192 551180 555520 562960 568960 576580 581120 629920 634880 650240 788144 807212 813568 881888 888832 893699 900736 910336 922528 929792 985180 1007872 1009015 1016960 1102360 1111040 1125920 1137920 1153160 1162240 1259840 1300480 1576288 1614424 1627136 1763776 1787398 1801472 1820672 1845056 1970360 2015744 2018030 2033920 2204720 2222080 2251840 2275840 2306320 2324480 2519680 2600960 3152576 3228848 3254272 3527552 3574796 3602944 3641344 3690112 3940720 4031488 4036060 4067840 4409440 4444160 4468495 4503680 4551680 4612640 4648960 5039360 6255893 6305152 6457696 6508544 7055104 7149592 7205888 7380224 7881440 8062976 8072120 8135680 8818880 8936990 9007360 9103360 9225280 10078720 12511786 12610304 12915392 14110208 14299184 14411776 14760448 15762880 16125952 16144240 16271360 17637760 17873980 18014720 18206720 18450560 20157440 25023572 25220608 25830784 28220416 28598368 28823552 29520896 31279465 31525760 32288480 32542720 35275520 35747960 36029440 36901120 40314880 50047144 50441216 51661568 56440832 57196736 59041792 62558930 63051520 64576960 70551040 71495920 72058880 73802240 80629760 100094288 100882432 103323136 112881664 114393472 118083584 125117860 126103040 129153920 141102080 142991840 144117760 147604480 200188576 201764864 206646272 228786944 250235720 252206080 258307840 282204160 285983680 295208960 400377152 413292544 457573888 500471440 504412160 516615680 564408320 571967360 590417920 800754304 826585088 915147776 1000942880 1008824320 1033231360 1143934720 1601508608 1830295552 2001885760 2066462720 2287869440 3203017216 3660591104 4003771520 4132925440 4575738880 6406034432 8007543040 9151477760 12812068864 16015086080 18302955520 25624137728 32030172160 64060344320 128120688640
• Sum of all divisors σ(n): 367174877184
• Sum of proper divisors (its aliquot sum) s(n): 239054188544
• 128120688640 is an abundant number, because the sum of its proper divisors (239054188544) is greater than itself. Its abundance is 110933499904

Bases of 128120688640

• Binary: 1110111010100100101101001000000000000₂
• Hexadecimal: 0x1DD4969000
• Base-36: 1MUVR01S

Squares and roots of 128120688640

• 128120688640 squared (128120688640²) is 16414910857587825049600
• 128120688640 cubed (128120688640³) is 2103089683038365114634594156544000
• The square root of 128120688640 is 357939.5041623655
• The cube root of 128120688640 is 5041.2676411645

Scales and comparisons

• 128,120,688,640 seconds is equal to 4,073 years, 43 weeks, 5 days, 8 hours, 10 minutes, 40 seconds.
• To count from 1 to 128,120,688,640 would take you about eight thousand, one hundred forty-seven 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 128120688640 cubic inches would be around 420.1 feet tall.

Recreational maths with 128120688640

• 128120688640 backwards is 046886021821
• The number of decimal digits it has is: 12
• The sum of 128120688640's digits is 46
• More coming soon!