138216078

Names of 138216078

• Cardinal: 138216078 can be written as One hundred thirty-eight million, two hundred sixteen thousand and seventy-eight.

Scientific notation

• Scientific notation: 1.38216078 × 10⁸

Factors of 138216078

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2593

Divisors of 138216078

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 9 11 13 14 18 21 22 26 27 33 39 42 54 63 66 77 78 91 99 117 126 143 154 182 189 198 231 234 273 286 297 351 378 429 462 546 594 693 702 819 858 1001 1287 1386 1638 2002 2079 2457 2557 2574 3003 3861 4158 4914 5114 6006 7671 7722 9009 15342 17899 18018 23013 27027 28127 33241 35798 46026 53697 54054 56254 66482 69039 84381 99723 107394 138078 161091 168762 196889 199446 232687 253143 299169 322182 365651 393778 465374 483273 506286 590667 598338 698061 731302 759429 897507 966546 1096953 1181334 1396122 1518858 1772001 1795014 2094183 2193906 2559557 3290859 3544002 4188366 5119114 5316003 6282549 6581718 7678671 9872577 10632006 12565098 15357342 19745154 23036013 46072026 69108039 138216078
• Sum of all divisors σ(n): 412554240
• Sum of proper divisors (its aliquot sum) s(n): 274338162
• 138216078 is an abundant number, because the sum of its proper divisors (274338162) is greater than itself. Its abundance is 136122084

Bases of 138216078

• Binary: 1000001111010000001010001110₂
• Hexadecimal: 0x83D028E
• Base-36: 2AAG7I

Squares and roots of 138216078

• 138216078 squared (138216078²) is 19103684217702084
• 138216078 cubed (138216078³) is 2640436307921280222906552
• The square root of 138216078 is 11756.5334176363
• The cube root of 138216078 is 517.0344984319

Scales and comparisons

• 138,216,078 seconds is equal to 4 years, 20 weeks, 3 days, 17 hours, 21 minutes, 18 seconds.
• To count from 1 to 138,216,078 would take you about six 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 138216078 cubic inches would be around 43.1 feet tall.

Recreational maths with 138216078

• 138216078 backwards is 870612831
• The number of decimal digits it has is: 9
• The sum of 138216078's digits is 36
• More coming soon!