138684930840

Names of 138684930840

• Cardinal: 138684930840 can be written as One hundred thirty-eight billion, six hundred eighty-four million, nine hundred thirty thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.3868493084 × 10¹¹

Factors of 138684930840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3936

Divisors of 138684930840

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 243 270 324 360 405 457 486 540 648 729 810 914 972 1080 1215 1371 1458 1620 1828 1944 2187 2285 2430 2742 2916 3240 3469 3645 3656 4113 4374 4570 4860 5484 5832 6855 6938 7290 8226 8748 9140 9720 10407 10935 10968 12339 13710 13876 14580 16452 17345 17496 18280 20565 20814 21870 24678 27420 27752 29160 31221 32904 34690 37017 41130 41628 43740 49356 52035 54840 61695 62442 69380 74034 82260 83256 87480 93663 98712 104070 111051 123390 124884 138760 148068 156105 164520 185085 187326 208140 222102 246780 249768 280989 296136 312210 333153 370170 374652 416280 444204 468315 493560 555255 561978 624420 666306 740340 749304 842967 888408 936630 999459 1110510 1123956 1248840 1332612 1404945 1480680 1585333 1665765 1685934 1873260 1998918 2221020 2247912 2528901 2665224 2809890 3170666 3331530 3371868 3746520 3997836 4214835 4442040 4755999 4997295 5057802 5619780 6341332 6663060 6743736 7586703 7926665 7995672 8429670 9511998 9994590 10115604 11239560 12644505 12682664 13326120 14267997 15173406 15853330 16859340 19023996 19989180 20231208 23779995 25289010 28535994 30346812 31706660 33718680 37933515 38047992 39978360 42803991 47559990 50578020 57071988 60693624 63413320 71339985 75867030 85607982 95119980 101156040 114143976 128411973 142679970 151734060 171215964 190239960 214019955 256823946 285359940 303468120 342431928 385235919 428039910 513647892 570719880 642059865 770471838 856079820 1027295784 1155707757 1284119730 1540943676 1712159640 1926179595 2311415514 2568239460 3081887352 3467123271 3852359190 4622831028 5136478920 5778538785 6934246542 7704718380 9245662056 11557077570 13868493084 15409436760 17335616355 23114155140 27736986168 34671232710 46228310280 69342465420 138684930840
• Sum of all divisors σ(n): 469149552000
• Sum of proper divisors (its aliquot sum) s(n): 330464621160
• 138684930840 is an abundant number, because the sum of its proper divisors (330464621160) is greater than itself. Its abundance is 191779690320

Bases of 138684930840

• Binary: 10000001001010010001000001101100011000₂
• Hexadecimal: 0x204A441B18
• Base-36: 1RPLFDI0

Squares and roots of 138684930840

• 138684930840 squared (138684930840²) is 19233510042095583105600
• 138684930840 cubed (138684930840³) is 2667398009998471431669608416704000
• The square root of 138684930840 is 372404.2572796395
• The cube root of 138684930840 is 5176.1846210545

Scales and comparisons

• 138,684,930,840 seconds is equal to 4,409 years, 39 weeks, 15 hours, 54 minutes.
• To count from 1 to 138,684,930,840 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 138684930840 cubic inches would be around 431.3 feet tall.

Recreational maths with 138684930840

• 138684930840 backwards is 048039486831
• 138684930840 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138684930840's digits is 54
• More coming soon!