138445684380

Names of 138445684380

• Cardinal: 138445684380 can be written as One hundred thirty-eight billion, four hundred forty-five million, six hundred eighty-four thousand, three hundred eighty.

Scientific notation

• Scientific notation: 1.3844568438 × 10¹¹

Factors of 138445684380

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 20774

Divisors of 138445684380

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 270 324 405 540 810 1620 5657 11314 15107 16971 22628 28285 30214 33942 45321 50913 56570 60428 67884 75535 84855 90642 101826 113140 135963 151070 152739 169710 181284 203652 226605 254565 271926 302140 305478 339420 407889 453210 458217 509130 543852 610956 679815 763695 815778 906420 916434 1018260 1223667 1359630 1527390 1631556 1832868 2039445 2291085 2447334 2719260 3054780 4078890 4582170 4894668 6118335 8157780 9164340 12236670 24473340 85460299 170920598 256380897 341841196 427301495 512761794 769142691 854602990 1025523588 1281904485 1538285382 1709205980 2307428073 2563808970 3076570764 3845713455 4614856146 5127617940 6922284219 7691426910 9229712292 11537140365 13844568438 15382853820 23074280730 27689136876 34611421095 46148561460 69222842190 138445684380
• Sum of all divisors σ(n): 434414767248
• Sum of proper divisors (its aliquot sum) s(n): 295969082868
• 138445684380 is an abundant number, because the sum of its proper divisors (295969082868) is greater than itself. Its abundance is 157523398488

Bases of 138445684380

• Binary: 10000000111100000000010111111010011100₂
• Hexadecimal: 0x203C017E9C
• Base-36: 1RLMZHR0

Squares and roots of 138445684380

• 138445684380 squared (138445684380²) is 19167207523446575984400
• 138445684380 cubed (138445684380³) is 2653617163237046108527930203672000
• The square root of 138445684380 is 372082.8998758207
• The cube root of 138445684380 is 5173.2064156171

Scales and comparisons

• 138,445,684,380 seconds is equal to 4,402 years, 7 weeks, 3 days, 14 hours, 33 minutes.
• To count from 1 to 138,445,684,380 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 138445684380 cubic inches would be around 431.1 feet tall.

Recreational maths with 138445684380

• 138445684380 backwards is 083486544831
• 138445684380 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138445684380's digits is 54
• More coming soon!