12638918500

Names of 12638918500

• Cardinal: 12638918500 can be written as Twelve billion, six hundred thirty-eight million, nine hundred eighteen thousand, five hundred.

Scientific notation

• Scientific notation: 1.26389185 × 10¹⁰

Factors of 12638918500

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 794

Divisors of 12638918500

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 13 20 25 26 50 52 65 100 125 130 169 250 260 325 338 373 401 500 650 676 746 802 845 1300 1492 1604 1625 1690 1865 2005 3250 3380 3730 4010 4225 4849 5213 6500 7460 8020 8450 9325 9698 10025 10426 16900 18650 19396 20050 20852 21125 24245 26065 37300 40100 42250 46625 48490 50125 52130 63037 67769 84500 93250 96980 100250 104260 121225 126074 130325 135538 149573 186500 200500 242450 252148 260650 271076 299146 315185 338845 484900 521300 598292 606125 630370 651625 677690 747865 1212250 1260740 1303250 1355380 1495730 1575925 1694225 1944449 2424500 2606500 2991460 3151850 3388450 3739325 3888898 6303700 6776900 7478650 7777796 7879625 8471125 9722245 14957300 15759250 16942250 18696625 19444490 25277837 31518500 33884500 37393250 38888980 48611225 50555674 74786500 97222450 101111348 126389185 194444900 243056125 252778370 486112250 505556740 631945925 972224500 1263891850 2527783700 3159729625 6319459250 12638918500
• Sum of all divisors σ(n): 30044942928
• Sum of proper divisors (its aliquot sum) s(n): 17406024428
• 12638918500 is an abundant number, because the sum of its proper divisors (17406024428) is greater than itself. Its abundance is 4767105928

Bases of 12638918500

• Binary: 1011110001010101101001011101100100₂
• Hexadecimal: 0x2F1569764
• Base-36: 5T0VVXG

Squares and roots of 12638918500

• 12638918500 squared (12638918500²) is 159742260849642250000
• 12638918500 cubed (12638918500³) is 2018969415884369151906625000000
• The square root of 12638918500 is 112422.9447221519
• The cube root of 12638918500 is 2329.3601305559

Scales and comparisons

• 12,638,918,500 seconds is equal to 401 years, 45 weeks, 4 days, 18 hours, 41 minutes, 40 seconds.
• To count from 1 to 12,638,918,500 would take you about eight hundred three 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 12638918500 cubic inches would be around 194.1 feet tall.

Recreational maths with 12638918500

• 12638918500 backwards is 00581983621
• The number of decimal digits it has is: 11
• The sum of 12638918500's digits is 43
• More coming soon!