21209332788

Names of 21209332788

• Cardinal: 21209332788 can be written as Twenty-one billion, two hundred nine million, three hundred thirty-two thousand, seven hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1209332788 × 10¹⁰

Factors of 21209332788

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 145566

Divisors of 21209332788

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 108 126 189 193 252 378 386 579 756 772 1158 1351 1737 2316 2702 3474 4053 5211 5404 6948 8106 10422 12159 16212 20844 24318 36477 48636 72954 145361 145908 290722 436083 581444 872166 1017527 1308249 1744332 2035054 2616498 3052581 3924747 4070108 5232996 6105162 7849494 9157743 12210324 15698988 18315486 27473229 28054673 36630972 54946458 56109346 84164019 109892916 112218692 168328038 196382711 252492057 336656076 392765422 504984114 589148133 757476171 785530844 1009968228 1178296266 1514952342 1767444399 2356592532 3029904684 3534888798 5302333197 7069777596 10604666394 21209332788
• Sum of all divisors σ(n): 63168510720
• Sum of proper divisors (its aliquot sum) s(n): 41959177932
• 21209332788 is an abundant number, because the sum of its proper divisors (41959177932) is greater than itself. Its abundance is 20749845144

Bases of 21209332788

• Binary: 10011110000001011001011110000110100₂
• Hexadecimal: 0x4F02CBC34
• Base-36: 9QRHLX0

Squares and roots of 21209332788

• 21209332788 squared (21209332788²) is 449835797312131852944
• 21209332788 cubed (21209332788³) is 9540717125148320378824373527872
• The square root of 21209332788 is 145634.2431847675
• The cube root of 21209332788 is 2768.0610787989

Scales and comparisons

• 21,209,332,788 seconds is equal to 674 years, 20 weeks, 2 days, 9 hours, 19 minutes, 48 seconds.
• To count from 1 to 21,209,332,788 would take you about one thousand, three hundred forty-eight 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 21209332788 cubic inches would be around 230.7 feet tall.

Recreational maths with 21209332788

• 21209332788 backwards is 88723390212
• The number of decimal digits it has is: 11
• The sum of 21209332788's digits is 45
• More coming soon!