138721820832

Names of 138721820832

• Cardinal: 138721820832 can be written as One hundred thirty-eight billion, seven hundred twenty-one million, eight hundred twenty thousand, eight hundred thirty-two.

Scientific notation

• Scientific notation: 1.38721820832 × 10¹¹

Factors of 138721820832

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1092241

Divisors of 138721820832

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 72 81 84 96 98 108 112 126 144 147 162 168 189 196 216 224 252 288 294 324 336 378 392 432 441 504 567 588 648 672 756 784 864 882 1008 1134 1176 1296 1323 1512 1568 1764 2016 2268 2352 2592 2646 3024 3528 3969 4536 4704 5292 6048 7056 7938 9072 10584 14112 15876 18144 21168 31752 42336 63504 127008 1092229 2184458 3276687 4368916 6553374 7645603 8737832 9830061 13106748 15291206 17475664 19660122 22936809 26213496 29490183 30582412 34951328 39320244 45873618 52426992 53519221 58980366 61164824 68810427 78640488 88470549 91747236 104853984 107038442 117960732 122329648 137620854 157280976 160557663 176941098 183494472 206431281 214076884 235921464 244659296 275241708 314561952 321115326 353882196 366988944 412862562 428153768 471842928 481672989 550483416 619293843 642230652 707764392 733977888 825725124 856307536 943685856 963345978 1100966832 1238587686 1284461304 1415528784 1445018967 1651450248 1712615072 1926691956 2201933664 2477175372 2568922608 2831057568 2890037934 3302900496 3853383912 4335056901 4954350744 5137845216 5780075868 6605800992 7706767824 8670113802 9908701488 11560151736 15413535648 17340227604 19817402976 23120303472 34680455208 46240606944 69360910416 138721820832
• Sum of all divisors σ(n): 474585949530
• Sum of proper divisors (its aliquot sum) s(n): 335864128698
• 138721820832 is an abundant number, because the sum of its proper divisors (335864128698) is greater than itself. Its abundance is 197142307866

Bases of 138721820832

• Binary: 10000001001100011101110000000010100000₂
• Hexadecimal: 0x204C7700A0
• Base-36: 1RQ7E200

Squares and roots of 138721820832

• 138721820832 squared (138721820832²) is 19243743574945509172224
• 138721820832 cubed (138721820832³) is 2669527148340542087552270358970368
• The square root of 138721820832 is 372453.7834846091
• The cube root of 138721820832 is 5176.6435329201

Scales and comparisons

• 138,721,820,832 seconds is equal to 4,410 years, 48 weeks, 15 hours, 7 minutes, 12 seconds.
• To count from 1 to 138,721,820,832 would take you about eight thousand, eight hundred twenty-one 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 138721820832 cubic inches would be around 431.4 feet tall.

Recreational maths with 138721820832

• 138721820832 backwards is 238028127831
• The number of decimal digits it has is: 12
• The sum of 138721820832's digits is 45
• More coming soon!