128388021440

Names of 128388021440

• Cardinal: 128388021440 can be written as One hundred twenty-eight billion, three hundred eighty-eight million, twenty-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.2838802144 × 10¹¹

Factors of 128388021440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2917

Divisors of 128388021440

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 59 64 70 80 112 118 140 160 224 236 280 295 320 397 413 448 472 560 590 794 826 944 1120 1180 1588 1652 1888 1985 2065 2240 2360 2447 2779 3176 3304 3776 3970 4130 4720 4894 5558 6352 6608 7940 8260 9440 9788 11116 12235 12704 13216 13895 15880 16520 17129 18880 19576 22232 23423 24470 25408 26432 27790 31760 33040 34258 39152 44464 46846 48940 55580 63520 66080 68516 78304 85645 88928 93692 97880 111160 117115 127040 132160 137032 144373 156608 163961 171290 177856 187384 195760 222320 234230 274064 288746 327922 342580 374768 391520 444640 468460 548128 577492 655844 685160 721865 749536 783040 819805 889280 936920 971459 1010611 1096256 1154984 1311688 1370320 1443730 1499072 1639610 1873840 1942918 2021222 2309968 2623376 2740640 2887460 3279220 3747680 3885836 4042444 4619936 4857295 5053055 5246752 5481280 5774920 6558440 6800213 7495360 7771672 8084888 9239872 9714590 10106110 10493504 11549840 13116880 13600426 15543344 16169776 19429180 20212220 23099680 26233760 27200852 31086688 32339552 34001065 38858360 40424440 46199360 52467520 54401704 57316081 62173376 64679104 68002130 77716720 80848880 108803408 114632162 136004260 155433440 161697760 217606816 229264324 272008520 286580405 310866880 323395520 401212567 435213632 458528648 544017040 573160810 802425134 917057296 1088034080 1146321620 1604850268 1834114592 2006062835 2176068160 2292643240 3209700536 3668229184 4012125670 4585286480 6419401072 8024251340 9170572960 12838802144 16048502680 18341145920 25677604288 32097005360 64194010720 128388021440
• Sum of all divisors σ(n): 356361431040
• Sum of proper divisors (its aliquot sum) s(n): 227973409600
• 128388021440 is an abundant number, because the sum of its proper divisors (227973409600) is greater than itself. Its abundance is 99585388160

Bases of 128388021440

• Binary: 1110111100100100001011011110011000000₂
• Hexadecimal: 0x1DE485BCC0
• Base-36: 1MZAWVCW

Squares and roots of 128388021440

• 128388021440 squared (128388021440²) is 16483484049277899673600
• 128388021440 cubed (128388021440³) is 2116281903524588999812325801984000
• The square root of 128388021440 is 358312.7425029705
• The cube root of 128388021440 is 5044.7715247271

Scales and comparisons

• 128,388,021,440 seconds is equal to 4,082 years, 17 weeks, 5 days, 11 hours, 17 minutes, 20 seconds.
• To count from 1 to 128,388,021,440 would take you about eight thousand, one hundred sixty-four 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 128388021440 cubic inches would be around 420.4 feet tall.

Recreational maths with 128388021440

• 128388021440 backwards is 044120883821
• The number of decimal digits it has is: 12
• The sum of 128388021440's digits is 41
• More coming soon!