12738399388

Names of 12738399388

• Cardinal: 12738399388 can be written as Twelve billion, seven hundred thirty-eight million, three hundred ninety-nine thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 1.2738399388 × 10¹⁰

Factors of 12738399388

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 134

Divisors of 12738399388

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 11 13 22 26 41 44 52 67 82 121 134 143 164 242 268 286 451 484 533 572 737 871 902 1066 1331 1474 1573 1742 1804 2132 2662 2747 2948 3146 3484 4489 4961 5324 5494 5863 6292 8107 8978 9581 9922 10988 11726 16214 17303 17956 19162 19844 23452 30217 32428 34606 35711 38324 49379 54571 58357 60434 64493 69212 71422 89177 98758 105391 109142 116714 120868 128986 142844 178354 184049 197516 210782 218284 233428 257972 332387 356708 368098 392821 421564 543169 641927 664774 709423 736196 785642 1086338 1159301 1283854 1329548 1418846 1571284 2024539 2172676 2318602 2392637 2567708 2837692 3656257 4049078 4321031 4637204 4785274 5974859 7061197 7312514 8098156 8642062 9570548 11949718 14122394 14625028 17284124 22269929 23899436 26319007 28244788 44539858 47531341 52638014 77673167 89079716 95062682 105276028 155346334 190125364 244969219 289509077 310692668 489938438 579018154 979876876 1158036308 3184599847 6369199694 12738399388
• Sum of all divisors σ(n): 27459679968
• Sum of proper divisors (its aliquot sum) s(n): 14721280580
• 12738399388 is an abundant number, because the sum of its proper divisors (14721280580) is greater than itself. Its abundance is 1982881192

Bases of 12738399388

• Binary: 1011110111010001001000110010011100₂
• Hexadecimal: 0x2F7448C9C
• Base-36: 5UO43VG

Squares and roots of 12738399388

• 12738399388 squared (12738399388²) is 162266818968198774544
• 12738399388 cubed (12738399388³) is 2067019547437210061113639579072
• The square root of 12738399388 is 112864.5178432975
• The cube root of 12738399388 is 2335.4556279739

Scales and comparisons

• 12,738,399,388 seconds is equal to 405 years, 2 weeks, 1 day, 4 hours, 16 minutes, 28 seconds.
• To count from 1 to 12,738,399,388 would take you about eight hundred ten 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 12738399388 cubic inches would be around 194.6 feet tall.

Recreational maths with 12738399388

• 12738399388 backwards is 88399383721
• The number of decimal digits it has is: 11
• The sum of 12738399388's digits is 61
• More coming soon!