138455729784

Names of 138455729784

• Cardinal: 138455729784 can be written as One hundred thirty-eight billion, four hundred fifty-five million, seven hundred twenty-nine thousand, seven hundred eighty-four.

Scientific notation

• Scientific notation: 1.38455729784 × 10¹¹

Factors of 138455729784

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 11232

Divisors of 138455729784

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 31 36 54 62 72 93 108 124 186 216 248 279 372 558 744 837 1116 1674 2232 2333 3348 4666 6696 6999 8863 9332 13998 17726 18664 20997 26589 27996 35452 41994 53178 55992 62991 70904 72323 79767 83988 106356 125982 144646 159534 167976 212712 216969 239301 251964 274753 289292 319068 433938 478602 503928 549506 578584 638136 650907 824259 867876 957204 1099012 1301814 1648518 1735752 1914408 1952721 2198024 2472777 2603628 3297036 3905442 4945554 5207256 6594072 7418331 7810884 9891108 14836662 15621768 19782216 20677379 29673324 41354758 59346648 62032137 82709516 124064274 165419032 186096411 248128548 372192822 496257096 558289233 640998749 744385644 1116578466 1281997498 1488771288 1922996247 2233156932 2563994996 3845992494 4466313864 5127989992 5768988741 7691984988 11537977482 15383969976 17306966223 23075954964 34613932446 46151909928 69227864892 138455729784
• Sum of all divisors σ(n): 397220659200
• Sum of proper divisors (its aliquot sum) s(n): 258764929416
• 138455729784 is an abundant number, because the sum of its proper divisors (258764929416) is greater than itself. Its abundance is 120309199632

Bases of 138455729784

• Binary: 10000000111100100110101100011001111000₂
• Hexadecimal: 0x203C9AC678
• Base-36: 1RLSYSU0

Squares and roots of 138455729784

• 138455729784 squared (138455729784²) is 19169989110020024686656
• 138455729784 cubed (138455729784³) is 2654194832179155184844652406562304
• The square root of 138455729784 is 372096.3985098485
• The cube root of 138455729784 is 5173.3315325341

Scales and comparisons

• 138,455,729,784 seconds is equal to 4,402 years, 24 weeks, 20 hours, 56 minutes, 24 seconds.
• To count from 1 to 138,455,729,784 would take you about eight thousand, eight hundred four 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 138455729784 cubic inches would be around 431.1 feet tall.

Recreational maths with 138455729784

• 138455729784 backwards is 487927554831
• The number of decimal digits it has is: 12
• The sum of 138455729784's digits is 63
• More coming soon!