138867984640

Names of 138867984640

• Cardinal: 138867984640 can be written as One hundred thirty-eight billion, eight hundred sixty-seven million, nine hundred eighty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.3886798464 × 10¹¹

Factors of 138867984640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1212

Divisors of 138867984640

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 28 32 35 40 44 55 56 64 70 77 80 88 110 112 128 140 154 160 176 220 224 256 280 308 320 352 385 440 448 560 616 640 704 770 880 896 1120 1187 1232 1280 1408 1540 1760 1792 2240 2374 2464 2816 3080 3520 4480 4748 4928 5935 6160 7040 8309 8960 9496 9856 11870 12320 13057 14080 16618 18992 19712 23740 24640 26114 33236 37984 41545 47480 49280 52228 65285 66472 75968 83090 91399 94960 98560 104456 130570 132944 151936 166180 182798 189920 208912 261140 265888 303872 332360 365596 379840 417824 456995 522280 531776 664720 731192 759680 835648 913990 1044560 1063552 1329440 1408969 1462384 1519360 1671296 1827980 2089120 2127104 2658880 2817938 2924768 3342592 3655960 4178240 5317760 5635876 5849536 7044845 7311920 8356480 9862783 10635520 11271752 11699072 14089690 14623840 15498659 16712960 19725566 22543504 23398144 28179380 29247680 30997318 39451132 45087008 49313915 56358760 58495360 61994636 77493295 78902264 90174016 98627830 108490613 112717520 116990720 123989272 154986590 157804528 180348032 197255660 216981226 225435040 247978544 309973180 315609056 360696064 394511320 433962452 450870080 495957088 542453065 619946360 631218112 789022640 867924904 901740160 991914176 1084906130 1239892720 1262436224 1578045280 1735849808 1803480320 1983828352 2169812260 2479785440 2524872448 3156090560 3471699616 3967656704 4339624520 4959570880 6312181120 6943399232 8679249040 9919141760 12624362240 13886798464 17358498080 19838283520 27773596928 34716996160 69433992320 138867984640
• Sum of all divisors σ(n): 415059970752
• Sum of proper divisors (its aliquot sum) s(n): 276191986112
• 138867984640 is an abundant number, because the sum of its proper divisors (276191986112) is greater than itself. Its abundance is 137324001472

Bases of 138867984640

• Binary: 10000001010101001011010100100100000000₂
• Hexadecimal: 0x20552D4900
• Base-36: 1RSMEUPS

Squares and roots of 138867984640

• 138867984640 squared (138867984640²) is 19284317157975275929600
• 138867984640 cubed (138867984640³) is 2677974258886599071291454521344000
• The square root of 138867984640 is 372649.9492016603
• The cube root of 138867984640 is 5178.4610127737

Scales and comparisons

• 138,867,984,640 seconds is equal to 4,415 years, 29 weeks, 5 days, 8 hours, 10 minutes, 40 seconds.
• To count from 1 to 138,867,984,640 would take you about eight thousand, eight hundred thirty-one 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 138867984640 cubic inches would be around 431.5 feet tall.

Recreational maths with 138867984640

• 138867984640 backwards is 046489768831
• 138867984640 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138867984640's digits is 64
• More coming soon!