138645007900

Names of 138645007900

• Cardinal: 138645007900 can be written as One hundred thirty-eight billion, six hundred forty-five million, seven thousand, nine hundred.

Scientific notation

• Scientific notation: 1.386450079 × 10¹¹

Factors of 138645007900

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1310

Divisors of 138645007900

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 10 14 17 20 25 28 34 35 50 68 70 79 85 100 119 139 140 158 170 175 238 278 316 340 350 395 425 476 553 556 595 695 700 790 850 973 1061 1106 1190 1343 1390 1580 1700 1946 1975 2122 2212 2363 2380 2686 2765 2780 2975 3475 3892 3950 4244 4726 4865 5305 5372 5530 5950 6715 6950 7427 7900 9401 9452 9730 10610 10981 11060 11815 11900 13430 13825 13900 14854 16541 18037 18802 19460 21220 21962 23630 24325 26525 26860 27650 29708 33082 33575 36074 37135 37604 43924 47005 47260 48650 53050 54905 55300 59075 66164 67150 72148 74270 76867 82705 83819 90185 94010 97300 106100 109810 118150 126259 134300 147479 148540 153734 165410 167638 180370 185675 186677 188020 219620 235025 236300 252518 274525 294958 307468 330820 335276 360740 371350 373354 384335 413525 419095 450925 470050 505036 549050 586733 589916 631295 737395 742700 746708 768670 827050 838190 901850 933385 940100 1032353 1098100 1173466 1262590 1306739 1424923 1474790 1537340 1654100 1676380 1803700 1866770 1921675 2064706 2095475 2346932 2507143 2525180 2613478 2849846 2933665 2949580 3156475 3686975 3733540 3843350 4129412 4190950 4666925 5014286 5161765 5226956 5699692 5867330 6312950 6533695 7124615 7373950 7686700 8381900 9333850 9974461 10028572 10323530 11650841 11734660 12535715 12625900 13067390 14249230 14668325 14747900 17550001 18667700 19948922 20647060 23301682 25071430 25808825 26134780 28498460 29336650 32668475 35100002 35623075 39897844 46603364 49872305 50142860 51617650 58254205 58673300 62678575 65336950 70200004 71246150 81555887 87750005 99744610 103235300 116508410 125357150 130673900 142492300 163111774 175500010 198064297 199489220 233016820 249361525 250714300 291271025 326223548 351000020 396128594 407779435 438750025 498723050 582542050 792257188 815558870 877500050 990321485 997446100 1165084100 1386450079 1631117740 1755000100 1980642970 2038897175 2772900158 3961285940 4077794350 4951607425 5545800316 6932250395 8155588700 9903214850 13864500790 19806429700 27729001580 34661251975 69322503950 138645007900
• Sum of all divisors σ(n): 371676211200
• Sum of proper divisors (its aliquot sum) s(n): 233031203300
• 138645007900 is an abundant number, because the sum of its proper divisors (233031203300) is greater than itself. Its abundance is 94386195400

Bases of 138645007900

• Binary: 10000001000111111000101110111000011100₂
• Hexadecimal: 0x2047E2EE1C
• Base-36: 1ROXNORG

Squares and roots of 138645007900

• 138645007900 squared (138645007900²) is 19222438215591062410000
• 138645007900 cubed (138645007900³) is 2665095098257884751003843039000000
• The square root of 138645007900 is 372350.6518055259
• The cube root of 138645007900 is 5175.6878875855

Scales and comparisons

• 138,645,007,900 seconds is equal to 4,408 years, 25 weeks, 14 hours, 11 minutes, 40 seconds.
• To count from 1 to 138,645,007,900 would take you about eight thousand, eight hundred sixteen 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 138645007900 cubic inches would be around 431.3 feet tall.

Recreational maths with 138645007900

• 138645007900 backwards is 009700546831
• The number of decimal digits it has is: 12
• The sum of 138645007900's digits is 43
• More coming soon!