12388945380

Names of 12388945380

• Cardinal: 12388945380 can be written as Twelve billion, three hundred eighty-eight million, nine hundred forty-five thousand, three hundred eighty.

Scientific notation

• Scientific notation: 1.238894538 × 10¹⁰

Factors of 12388945380

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 10729

Divisors of 12388945380

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 409 420 490 588 735 818 980 1227 1470 1636 2045 2454 2863 2940 4090 4908 5726 6135 8180 8589 10303 11452 12270 14315 17178 20041 20606 24540 28630 30909 34356 40082 41212 42945 51515 57260 60123 61818 72121 80164 85890 100205 103030 120246 123636 144242 154545 171780 200410 206060 216363 240492 288484 300615 309090 360605 400820 432726 504847 601230 618180 721210 865452 1009694 1081815 1202460 1442420 1514541 2019388 2163630 2524235 3029082 4213927 4327260 5048470 6058164 7572705 8427854 10096940 12641781 15145410 16855708 21069635 25283562 29497489 30290820 42139270 50567124 58994978 63208905 84278540 88492467 117989956 126417810 147487445 176984934 206482423 252835620 294974890 353969868 412964846 442462335 589949780 619447269 825929692 884924670 1032412115 1238894538 1769849340 2064824230 2477789076 3097236345 4129648460 6194472690 12388945380
• Sum of all divisors σ(n): 40455152640
• Sum of proper divisors (its aliquot sum) s(n): 28066207260
• 12388945380 is an abundant number, because the sum of its proper divisors (28066207260) is greater than itself. Its abundance is 15677261880

Bases of 12388945380

• Binary: 1011100010011100000100110111100100₂
• Hexadecimal: 0x2E2704DE4
• Base-36: 5OW23FO

Squares and roots of 12388945380

• 12388945380 squared (12388945380²) is 153485967628623344400
• 12388945380 cubed (12388945380³) is 1901529269547462738364528872000
• The square root of 12388945380 is 111305.6394797677
• The cube root of 12388945380 is 2313.9010300687

Scales and comparisons

• 12,388,945,380 seconds is equal to 393 years, 48 weeks, 2 days, 13 hours, 43 minutes.
• To count from 1 to 12,388,945,380 would take you about seven hundred eighty-seven 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 12388945380 cubic inches would be around 192.8 feet tall.

Recreational maths with 12388945380

• 12388945380 backwards is 08354988321
• The number of decimal digits it has is: 11
• The sum of 12388945380's digits is 51
• More coming soon!