21393790800

Names of 21393790800

• Cardinal: 21393790800 can be written as Twenty-one billion, three hundred ninety-three million, seven hundred ninety thousand, eight hundred.

Scientific notation

• Scientific notation: 2.13937908 × 10¹⁰

Factors of 21393790800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 15130

Divisors of 21393790800

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 40 48 50 60 75 80 100 120 150 200 240 300 400 600 1200 1289 2578 3867 5156 6445 7734 10312 12890 13831 15468 19335 20624 25780 27662 30936 32225 38670 41493 51560 55324 61872 64450 69155 77340 82986 96675 103120 110648 128900 138310 154680 165972 193350 207465 221296 257800 276620 309360 331944 345775 386700 414930 515600 553240 663888 691550 773400 829860 1037325 1106480 1383100 1546800 1659720 2074650 2766200 3319440 4149300 5532400 8298600 16597200 17828159 35656318 53484477 71312636 89140795 106968954 142625272 178281590 213937908 267422385 285250544 356563180 427875816 445703975 534844770 713126360 855751632 891407950 1069689540 1337111925 1426252720 1782815900 2139379080 2674223850 3565631800 4278758160 5348447700 7131263600 10696895400 21393790800
• Sum of all divisors σ(n): 68589568320
• Sum of proper divisors (its aliquot sum) s(n): 47195777520
• 21393790800 is an abundant number, because the sum of its proper divisors (47195777520) is greater than itself. Its abundance is 25801986720

Bases of 21393790800

• Binary: 10011111011001010110101011101010000₂
• Hexadecimal: 0x4FB2B5750
• Base-36: 9TTB6MO

Squares and roots of 21393790800

• 21393790800 squared (21393790800²) is 457694284794164640000
• 21393790800 cubed (21393790800³) is 9791815779241979368917312000000
• The square root of 21393790800 is 146266.1642349317
• The cube root of 21393790800 is 2776.0625555145

Scales and comparisons

• 21,393,790,800 seconds is equal to 680 years, 13 weeks, 2 days, 7 hours, 40 minutes.
• To count from 1 to 21,393,790,800 would take you about one thousand, three hundred sixty 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 21393790800 cubic inches would be around 231.3 feet tall.

Recreational maths with 21393790800

• 21393790800 backwards is 00809739312
• The number of decimal digits it has is: 11
• The sum of 21393790800's digits is 42
• More coming soon!