138686011920

Names of 138686011920

• Cardinal: 138686011920 can be written as One hundred thirty-eight billion, six hundred eighty-six million, eleven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.3868601192 × 10¹¹

Factors of 138686011920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 18483

Divisors of 138686011920

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 31 36 40 45 48 54 60 62 72 80 90 93 108 113 120 124 135 144 155 180 186 216 226 240 248 270 279 310 339 360 372 432 452 465 496 540 558 565 620 678 720 744 837 904 930 1017 1080 1116 1130 1240 1356 1395 1488 1674 1695 1808 1860 2034 2160 2232 2260 2480 2712 2790 3051 3348 3390 3503 3720 4068 4185 4464 4520 5085 5424 5580 6102 6696 6780 7006 7440 8136 8370 9040 10170 10509 11160 12204 13392 13560 14012 15255 16272 16740 17515 18329 20340 21018 22320 24408 27120 28024 30510 31527 33480 35030 36658 40680 42036 48816 52545 54987 56048 61020 63054 66960 70060 73316 81360 84072 91645 94581 105090 109974 122040 126108 140120 146632 157635 164961 168144 183290 189162 210180 219948 244080 252216 274935 280240 293264 315270 329922 366580 378324 420360 439896 472905 494883 504432 549870 568199 630540 659844 733160 756648 824805 840720 879792 945810 989766 1099740 1136398 1261080 1319688 1466320 1513296 1649610 1704597 1891620 1979532 2071177 2199480 2272796 2474415 2522160 2639376 2840995 3299220 3409194 3783240 3959064 4142354 4398960 4545592 4948830 5113791 5681990 6213531 6598440 6818388 7566480 7918128 8284708 8522985 9091184 9897660 10227582 10355885 11363980 12427062 13196880 13636776 15341373 16569416 17045970 18640593 19795320 20455164 20711770 22727960 24854124 25568955 27273552 30682746 31067655 33138832 34091940 37281186 39590640 40910328 41423540 45455920 49708248 51137910 55921779 61365492 62135310 64206487 68183880 74562372 76706865 81820656 82847080 93202965 99416496 102275820 111843558 122730984 124270620 128412974 136367760 149124744 153413730 165694160 186405930 192619461 204551640 223687116 245461968 248541240 256825948 279608895 298249488 306827460 321032435 372811860 385238922 409103280 447374232 497082480 513651896 559217790 577858383 613654920 642064870 745623720 770477844 894748464 963097305 1027303792 1118435580 1155716766 1227309840 1284129740 1491247440 1540955688 1733575149 1926194610 2236871160 2311433532 2568259480 2889291915 3081911376 3467150298 3852389220 4473742320 4622867064 5136518960 5778583830 6934300596 7704778440 8667875745 9245734128 11557167660 13868601192 15409556880 17335751490 23114335320 27737202384 34671502980 46228670640 69343005960 138686011920
• Sum of all divisors σ(n): 497496729600
• Sum of proper divisors (its aliquot sum) s(n): 358810717680
• 138686011920 is an abundant number, because the sum of its proper divisors (358810717680) is greater than itself. Its abundance is 220124705760

Bases of 138686011920

• Binary: 10000001001010010101001001101000010000₂
• Hexadecimal: 0x204A549A10
• Base-36: 1RPM2JO0

Squares and roots of 138686011920

• 138686011920 squared (138686011920²) is 19233809902274382086400
• 138686011920 cubed (138686011920³) is 2667460389373838989145104869888000
• The square root of 138686011920 is 372405.7087639769
• The cube root of 138686011920 is 5176.1980708577

Scales and comparisons

• 138,686,011,920 seconds is equal to 4,409 years, 40 weeks, 6 days, 4 hours, 12 minutes.
• To count from 1 to 138,686,011,920 would take you about eight thousand, eight hundred nineteen 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 138686011920 cubic inches would be around 431.3 feet tall.

Recreational maths with 138686011920

• 138686011920 backwards is 029110686831
• 138686011920 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138686011920's digits is 45
• More coming soon!