128212210720

Names of 128212210720

• Cardinal: 128212210720 can be written as One hundred twenty-eight billion, two hundred twelve million, two hundred ten thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2821221072 × 10¹¹

Factors of 128212210720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 11347

Divisors of 128212210720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 32 40 44 55 61 80 88 107 110 122 160 176 214 220 244 305 352 428 440 488 535 610 671 856 880 976 1070 1177 1220 1342 1712 1760 1952 2140 2354 2440 2684 3355 3424 4280 4708 4880 5368 5885 6527 6710 8560 9416 9760 10736 11161 11770 13054 13420 17120 18832 21472 22322 23540 26108 26840 32635 37664 44644 47080 52216 53680 55805 65270 71797 89288 94160 104432 107360 111610 122771 130540 143594 178576 188320 208864 223220 245542 261080 287188 357152 358985 446440 491084 522160 574376 613855 680821 717970 892880 982168 1044320 1148752 1194227 1227710 1361642 1435940 1785760 1964336 2297504 2388454 2455420 2723284 2871880 3404105 3928672 4776908 4910840 5446568 5743760 5971135 6808210 7489031 9553816 9821680 10893136 11487520 11942270 13136497 13616420 14978062 19107632 19643360 21786272 23884540 26272994 27232840 29956124 37445155 38215264 47769080 52545988 54465680 59912248 65682485 72847847 74890310 95538160 105091976 108931360 119824496 131364970 145695694 149780620 191076320 210183952 239648992 262729940 291391388 299561240 364239235 420367904 525459880 582782776 599122480 728478470 801326317 1050919760 1165565552 1198244960 1456956940 1602652634 2101839520 2331131104 2913913880 3205305268 4006631585 5827827760 6410610536 8013263170 11655655520 12821221072 16026526340 25642442144 32053052680 64106105360 128212210720
• Sum of all divisors σ(n): 339024051072
• Sum of proper divisors (its aliquot sum) s(n): 210811840352
• 128212210720 is an abundant number, because the sum of its proper divisors (210811840352) is greater than itself. Its abundance is 82599629632

Bases of 128212210720

• Binary: 1110111011010000010110001010000100000₂
• Hexadecimal: 0x1DDA0B1420
• Base-36: 1MWE8MXS

Squares and roots of 128212210720

• 128212210720 squared (128212210720²) is 16438370977709682918400
• 128212210720 cubed (128212210720³) is 2107599883687646289318285365248000
• The square root of 128212210720 is 358067.3270769061
• The cube root of 128212210720 is 5042.4677530433

Scales and comparisons

• 128,212,210,720 seconds is equal to 4,076 years, 39 weeks, 14 hours, 58 minutes, 40 seconds.
• To count from 1 to 128,212,210,720 would take you about eight thousand, one hundred fifty-three 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 128212210720 cubic inches would be around 420.2 feet tall.

Recreational maths with 128212210720

• 128212210720 backwards is 027012212821
• The number of decimal digits it has is: 12
• The sum of 128212210720's digits is 28
• More coming soon!