138642361920

Names of 138642361920

• Cardinal: 138642361920 can be written as One hundred thirty-eight billion, six hundred forty-two million, three hundred sixty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.3864236192 × 10¹¹

Factors of 138642361920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 118120

Divisors of 138642361920

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 144 160 180 192 240 288 320 360 409 480 576 720 818 960 1227 1440 1636 2045 2454 2880 3272 3681 4090 4908 6135 6544 7362 8180 9816 12270 13088 14724 16360 18405 19632 24540 26176 29448 32720 36810 39264 49080 58896 65440 73620 78528 98160 117701 117792 130880 147240 196320 235402 235584 294480 353103 392640 470804 588505 588960 706206 941608 1059309 1177010 1177920 1412412 1765515 1883216 2118618 2354020 2824824 3531030 3766432 4237236 4708040 5296545 5649648 7062060 7532864 8474472 9416080 10593090 11299296 14124120 16948944 18832160 21186180 22598592 28248240 33897888 37664320 42372360 48139709 56496480 67795776 84744720 96279418 112992960 144419127 169489440 192558836 240698545 288838254 338978880 385117672 433257381 481397090 577676508 722095635 770235344 866514762 962794180 1155353016 1444191270 1540470688 1733029524 1925588360 2166286905 2310706032 2888382540 3080941376 3466059048 3851176720 4332573810 4621412064 5776765080 6932118096 7702353440 8665147620 9242824128 11553530160 13864236192 15404706880 17330295240 23107060320 27728472384 34660590480 46214120640 69321180960 138642361920
• Sum of all divisors σ(n): 478041964920
• Sum of proper divisors (its aliquot sum) s(n): 339399603000
• 138642361920 is an abundant number, because the sum of its proper divisors (339399603000) is greater than itself. Its abundance is 200757241080

Bases of 138642361920

• Binary: 10000001000111101110101000111001000000₂
• Hexadecimal: 0x2047BA8E40
• Base-36: 1ROW2Z40

Squares and roots of 138642361920

• 138642361920 squared (138642361920²) is 19221704518756266086400
• 138642361920 cubed (138642361920³) is 2664942514608705671018490789888000
• The square root of 138642361920 is 372347.0987130153
• The cube root of 138642361920 is 5175.6549621213

Scales and comparisons

• 138,642,361,920 seconds is equal to 4,408 years, 20 weeks, 4 days, 23 hours, 12 minutes.
• To count from 1 to 138,642,361,920 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 138642361920 cubic inches would be around 431.3 feet tall.

Recreational maths with 138642361920

• 138642361920 backwards is 029163246831
• 138642361920 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138642361920's digits is 45
• More coming soon!