13638819920

Names of 13638819920

• Cardinal: 13638819920 can be written as Thirteen billion, six hundred thirty-eight million, eight hundred nineteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.363881992 × 10¹⁰

Factors of 13638819920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1205

Divisors of 13638819920

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 121 176 220 242 440 484 605 880 968 1187 1210 1936 2374 2420 4748 4840 5935 9496 9680 11870 13057 18992 23740 26114 47480 52228 65285 94960 104456 130570 143627 208912 261140 287254 522280 574508 718135 1044560 1149016 1408969 1436270 2298032 2817938 2872540 5635876 5745080 7044845 11271752 11490160 14089690 15498659 22543504 28179380 30997318 56358760 61994636 77493295 112717520 123989272 154986590 170485249 247978544 309973180 340970498 619946360 681940996 852426245 1239892720 1363881992 1704852490 2727763984 3409704980 6819409960 13638819920
• Sum of all divisors σ(n): 34884463866
• Sum of proper divisors (its aliquot sum) s(n): 21245643946
• 13638819920 is an abundant number, because the sum of its proper divisors (21245643946) is greater than itself. Its abundance is 7606824026

Bases of 13638819920

• Binary: 1100101100111011111110000001010000₂
• Hexadecimal: 0x32CEFE050
• Base-36: 69K78SW

Squares and roots of 13638819920

• 13638819920 squared (13638819920²) is 186017408810188806400
• 13638819920 cubed (13638819920³) is 2537057940747186591689343488000
• The square root of 13638819920 is 116785.3583288591
• The cube root of 13638819920 is 2389.2353500009

Scales and comparisons

• 13,638,819,920 seconds is equal to 433 years, 34 weeks, 6 days, 17 hours, 5 minutes, 20 seconds.
• To count from 1 to 13,638,819,920 would take you about eight hundred sixty-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 13638819920 cubic inches would be around 199.1 feet tall.

Recreational maths with 13638819920

• 13638819920 backwards is 02991883631
• The number of decimal digits it has is: 11
• The sum of 13638819920's digits is 50
• More coming soon!