642147961728

Names of 642147961728

• Cardinal: 642147961728 can be written as Six hundred forty-two billion, one hundred forty-seven million, nine hundred sixty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 6.42147961728 × 10¹¹

Factors of 642147961728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 448273

Divisors of 642147961728

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 32 39 41 42 48 52 56 64 78 82 84 91 96 104 112 123 128 156 164 168 182 192 208 224 246 273 287 312 328 336 364 384 416 448 492 533 546 574 624 656 672 728 832 861 896 984 1066 1092 1148 1248 1312 1344 1456 1599 1664 1722 1968 2132 2184 2296 2496 2624 2688 2912 3198 3444 3731 3936 4264 4368 4592 4992 5248 5824 6396 6888 7462 7872 8528 8736 9184 11193 11648 12792 13776 14924 15744 17056 17472 18368 22386 25584 27552 29848 34112 34944 36736 44772 51168 55104 59696 68224 89544 102336 110208 119392 179088 204672 238784 358176 448207 477568 716352 896414 1344621 1432704 1792828 2689242 3137449 3585656 5378484 5826691 6274898 7171312 9412347 10756968 11653382 12549796 14342624 17480073 18376487 18824694 21513936 23306764 25099592 28685248 34960146 36752974 37649388 40786837 43027872 46613528 50199184 55129461 57370496 69920292 73505948 75298776 81573674 86055744 93227056 100398368 110258922 122360511 128635409 139840584 147011896 150597552 163147348 172111488 186454112 200796736 220517844 238894331 244721022 257270818 279681168 294023792 301195104 326294696 372908224 385906227 401593472 441035688 477788662 489442044 514541636 559362336 588047584 602390208 652589392 716682993 745816448 771812454 882071376 955577324 978884088 1029083272 1118724672 1176095168 1204780416 1305178784 1433365986 1543624908 1672260317 1764142752 1911154648 1957768176 2058166544 2237449344 2352190336 2610357568 2866731972 3087249816 3344520634 3528285504 3822309296 3915536352 4116333088 5016780951 5220715136 5733463944 6174499632 6689041268 7056571008 7644618592 7831072704 8232666176 10033561902 11466927888 12348999264 13378082536 15289237184 15662145408 16465332352 20067123804 22933855776 24697998528 26756165072 30578474368 40134247608 45867711552 49395997056 53512330144 80268495216 91735423104 107024660288 160536990432 214049320576 321073980864 642147961728
• Sum of all divisors σ(n): 2150537840640
• Sum of proper divisors (its aliquot sum) s(n): 1508389878912
• 642147961728 is an abundant number, because the sum of its proper divisors (1508389878912) is greater than itself. Its abundance is 866241917184

Bases of 642147961728

• Binary: 1001010110000011000000000100101110000000₂
• Hexadecimal: 0x9583004B80
• Base-36: 86ZYBEDC

Squares and roots of 642147961728

• 642147961728 squared (642147961728²) is 412354004751424952745984
• 642147961728 cubed (642147961728³) is 264792283661505560709392342137700352
• The square root of 642147961728 is 801341.3515649869
• The cube root of 642147961728 is 8627.3689180597

Scales and comparisons

• 642,147,961,728 seconds is equal to 20,418 years, 16 weeks, 4 days, 1 hour, 48 minutes, 48 seconds.
• To count from 1 to 642,147,961,728 would take you about forty thousand, eight hundred thirty-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 642147961728 cubic inches would be around 718.9 feet tall.

Recreational maths with 642147961728

• 642147961728 backwards is 827169741246
• The number of decimal digits it has is: 12
• The sum of 642147961728's digits is 57
• More coming soon!