138908000000

Names of 138908000000

• Cardinal: 138908000000 can be written as One hundred thirty-eight billion, nine hundred eight million.

Scientific notation

• Scientific notation: 1.38908 × 10¹¹

Factors of 138908000000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 66

Divisors of 138908000000

• Number of divisors d(n): 756
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 25 28 32 35 40 41 44 50 55 56 64 70 77 80 82 88 100 110 112 121 125 128 140 154 160 164 175 176 200 205 220 224 242 250 256 275 280 287 308 320 328 350 352 385 400 410 440 448 451 484 500 550 560 574 605 616 625 640 656 700 704 770 800 820 847 875 880 896 902 968 1000 1025 1100 1120 1148 1210 1232 1250 1280 1312 1375 1400 1408 1435 1540 1600 1640 1694 1750 1760 1792 1804 1925 1936 2000 2050 2200 2240 2255 2296 2420 2464 2500 2624 2750 2800 2816 2870 3025 3080 3125 3157 3200 3280 3388 3500 3520 3608 3850 3872 4000 4100 4235 4375 4400 4480 4510 4592 4840 4928 4961 5000 5125 5248 5500 5600 5740 6050 6160 6250 6314 6400 6560 6776 6875 7000 7040 7175 7216 7700 7744 8000 8200 8470 8750 8800 8960 9020 9184 9625 9680 9856 9922 10000 10250 10496 11000 11200 11275 11480 12100 12320 12500 12628 13120 13552 13750 14000 14080 14350 14432 15125 15400 15488 15625 15785 16000 16400 16940 17500 17600 18040 18368 19250 19360 19712 19844 20000 20500 21175 21875 22000 22400 22550 22960 24200 24640 24805 25000 25256 25625 26240 27104 27500 28000 28700 28864 30250 30800 30976 31250 31570 32000 32800 33880 34375 34727 35000 35200 35875 36080 36736 38500 38720 39688 40000 41000 42350 43750 44000 44800 45100 45920 48125 48400 49280 49610 50000 50512 51250 52480 54208 55000 56000 56375 57400 57728 60500 61600 62500 63140 65600 67760 68750 69454 70000 70400 71750 72160 73472 75625 77000 77440 78925 79376 80000 82000 84700 87500 88000 90200 91840 96250 96800 98560 99220 100000 101024 102500 105875 108416 109375 110000 112000 112750 114800 115456 121000 123200 124025 125000 126280 128125 131200 135520 137500 138908 140000 143500 144320 151250 154000 154880 157850 158752 160000 164000 169400 171875 173635 175000 176000 179375 180400 183680 192500 193600 198440 200000 202048 205000 211750 216832 218750 220000 224000 225500 229600 240625 242000 246400 248050 250000 252560 256250 262400 271040 275000 277816 280000 281875 287000 288640 302500 308000 315700 317504 328000 338800 343750 347270 350000 352000 358750 360800 367360 378125 385000 387200 394625 396880 400000 404096 410000 423500 437500 440000 451000 459200 481250 484000 492800 496100 500000 505120 512500 529375 542080 550000 555632 560000 563750 574000 577280 605000 616000 620125 631400 635008 640625 656000 677600 687500 694540 700000 717500 721600 756250 770000 774400 789250 793760 800000 808192 820000 847000 868175 875000 880000 896875 902000 918400 962500 968000 992200 1000000 1010240 1025000 1058750 1084160 1100000 1111264 1120000 1127500 1148000 1203125 1210000 1232000 1240250 1262800 1270016 1281250 1312000 1355200 1375000 1389080 1400000 1409375 1435000 1443200 1512500 1540000 1578500 1587520 1640000 1694000 1736350 1750000 1760000 1793750 1804000 1836800 1890625 1925000 1936000 1973125 1984400 2000000 2020480 2050000 2117500 2200000 2222528 2255000 2296000 2406250 2420000 2464000 2480500 2525600 2562500 2646875 2710400 2750000 2778160 2800000 2818750 2870000 2886400 3025000 3080000 3100625 3157000 3175040 3280000 3388000 3472700 3500000 3587500 3608000 3781250 3850000 3872000 3946250 3968800 4000000 4040960 4100000 4235000 4340875 4400000 4445056 4484375 4510000 4592000 4812500 4840000 4961000 5051200 5125000 5293750 5420800 5500000 5556320 5600000 5637500 5740000 6050000 6160000 6201250 6314000 6350080 6560000 6776000 6945400 7000000 7046875 7175000 7216000 7562500 7700000 7892500 7937600 8200000 8470000 8681750 8800000 8890112 8968750 9020000 9184000 9625000 9680000 9865625 9922000 10102400 10250000 10587500 11000000 11112640 11275000 11480000 12100000 12320000 12402500 12628000 13234375 13552000 13890800 14000000 14093750 14350000 14432000 15125000 15400000 15503125 15785000 15875200 16400000 16940000 17363500 17937500 18040000 19250000 19360000 19731250 19844000 20204800 20500000 21175000 21704375 22000000 22225280 22550000 22960000 24200000 24805000 25256000 26468750 27104000 27781600 28000000 28187500 28700000 30250000 30800000 31006250 31570000 31750400 32800000 33880000 34727000 35875000 36080000 38500000 39462500 39688000 41000000 42350000 43408750 44000000 44450560 45100000 45920000 48400000 49328125 49610000 50512000 52937500 55563200 56375000 57400000 60500000 61600000 62012500 63140000 67760000 69454000 71750000 72160000 77000000 77515625 78925000 79376000 82000000 84700000 86817500 90200000 96800000 98656250 99220000 101024000 105875000 108521875 111126400 112750000 114800000 121000000 124025000 126280000 135520000 138908000 143500000 154000000 155031250 157850000 158752000 164000000 169400000 173635000 180400000 197312500 198440000 211750000 217043750 222252800 225500000 229600000 242000000 248050000 252560000 277816000 287000000 308000000 310062500 315700000 338800000 347270000 360800000 394625000 396880000 423500000 434087500 451000000 484000000 496100000 505120000 542609375 555632000 574000000 620125000 631400000 677600000 694540000 789250000 793760000 847000000 868175000 902000000 992200000 1085218750 1111264000 1148000000 1240250000 1262800000 1389080000 1578500000 1694000000 1736350000 1804000000 1984400000 2170437500 2480500000 2525600000 2778160000 3157000000 3388000000 3472700000 3968800000 4340875000 4961000000 5556320000 6314000000 6945400000 8681750000 9922000000 12628000000 13890800000 17363500000 19844000000 27781600000 34727000000 69454000000 138908000000
• Sum of all divisors σ(n): 446001478608
• Sum of proper divisors (its aliquot sum) s(n): 307093478608
• 138908000000 is an abundant number, because the sum of its proper divisors (307093478608) is greater than itself. Its abundance is 168185478608

Bases of 138908000000

• Binary: 10000001010111100011111101111100000000₂
• Hexadecimal: 0x20578FDF00
• Base-36: 1RTA8IRK

Squares and roots of 138908000000

• 138908000000 squared (138908000000²) is 19295432464000000000000
• 138908000000 cubed (138908000000³) is 2680289932709312000000000000000000
• The square root of 138908000000 is 372703.6356141431
• The cube root of 138908000000 is 5178.9583630253

Scales and comparisons

• 138,908,000,000 seconds is equal to 4,416 years, 43 weeks, 6 days, 11 hours, 33 minutes, 20 seconds.
• To count from 1 to 138,908,000,000 would take you about eight thousand, eight hundred thirty-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 138908000000 cubic inches would be around 431.6 feet tall.

Recreational maths with 138908000000

• 138908000000 backwards is 000000809831
• The number of decimal digits it has is: 12
• The sum of 138908000000's digits is 29
• More coming soon!