138128853840

Names of 138128853840

• Cardinal: 138128853840 can be written as One hundred thirty-eight billion, one hundred twenty-eight million, eight hundred fifty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.3812885384 × 10¹¹

Factors of 138128853840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 872

Divisors of 138128853840

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 61 73 80 120 122 146 183 219 240 244 292 305 307 365 366 421 438 488 584 610 614 730 732 842 876 915 921 976 1095 1168 1220 1228 1263 1460 1464 1535 1684 1752 1830 1842 2105 2190 2440 2456 2526 2920 2928 3070 3368 3504 3660 3684 4210 4380 4453 4605 4880 4912 5052 5840 6140 6315 6736 7320 7368 8420 8760 8906 9210 10104 12280 12630 13359 14640 14736 16840 17520 17812 18420 18727 20208 22265 22411 24560 25260 25681 26718 30733 33680 35624 36840 37454 44530 44822 50520 51362 53436 56181 61466 66795 67233 71248 73680 74908 77043 89060 89644 92199 93635 101040 102724 106872 112055 112362 122932 128405 129247 133590 134466 149816 153665 154086 178120 179288 184398 187270 205448 213744 224110 224724 245864 256810 258494 267180 268932 280905 299632 307330 308172 336165 356240 358576 368796 374540 385215 387741 410896 448220 449448 460995 491728 513620 516988 534360 537864 561810 614660 616344 646235 672330 737592 749080 770430 775482 896440 898896 921990 1027240 1033976 1068720 1075728 1123620 1229320 1232688 1292470 1344660 1367071 1475184 1498160 1540860 1550964 1792880 1843980 1874713 1938705 2054480 2067952 2247240 2458640 2584940 2689320 2734142 3081720 3101928 3687960 3749426 3877410 4101213 4494480 5169880 5378640 5468284 5624139 6163440 6203856 6835355 7375920 7498852 7754820 7884067 8202426 9373565 9435031 10339760 10936568 11248278 13670710 14997704 15509640 15768134 16404852 18747130 18870062 20506065 21873136 22496556 23652201 27341420 28120695 28305093 29995408 31019280 31536268 32809704 37494260 37740124 39420335 41012130 44993112 47175155 47304402 54682840 56241390 56610186 63072536 65619408 74988520 75480248 78840670 82024260 89986224 94350310 94608804 109365680 112482780 113220372 118261005 126145072 141525465 149977040 150960496 157681340 164048520 188700620 189217608 224965560 226440744 236522010 283050930 315362680 328097040 377401240 378435216 449931120 452881488 473044020 566101860 575536891 630725360 754802480 946088040 1132203720 1151073782 1726610673 1892176080 2264407440 2302147564 2877684455 3453221346 4604295128 5755368910 6906442692 8633053365 9208590256 11510737820 13812885384 17266106730 23021475640 27625770768 34532213460 46042951280 69064426920 138128853840
• Sum of all divisors σ(n): 443669436672
• Sum of proper divisors (its aliquot sum) s(n): 305540582832
• 138128853840 is an abundant number, because the sum of its proper divisors (305540582832) is greater than itself. Its abundance is 167411728992

Bases of 138128853840

• Binary: 10000000101001000111110000101101010000₂
• Hexadecimal: 0x20291F0B50
• Base-36: 1RGECPQO

Squares and roots of 138128853840

• 138128853840 squared (138128853840²) is 19079580263152082745600
• 138128853840 cubed (138128853840³) is 2635440553497482775258568303104000
• The square root of 138128853840 is 371656.9033934389
• The cube root of 138128853840 is 5169.2571371723

Scales and comparisons

• 138,128,853,840 seconds is equal to 4,392 years, 3 weeks, 4 days, 14 hours, 4 minutes.
• To count from 1 to 138,128,853,840 would take you about eight thousand, seven hundred eighty-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 138128853840 cubic inches would be around 430.8 feet tall.

Recreational maths with 138128853840

• 138128853840 backwards is 048358821831
• The number of decimal digits it has is: 12
• The sum of 138128853840's digits is 51
• More coming soon!