21021128000

Names of 21021128000

• Cardinal: 21021128000 can be written as Twenty-one billion, twenty-one million, one hundred twenty-eight thousand.

Scientific notation

• Scientific notation: 2.1021128 × 10¹⁰

Factors of 21021128000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1628

Divisors of 21021128000

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 160 200 250 320 400 500 800 1000 1600 1621 2000 3242 4000 6484 8000 8105 12968 16210 25936 32420 40525 51872 64840 81050 103744 129680 162100 202625 259360 324200 405250 518720 648400 810500 1296800 1621000 2593600 2627641 3242000 5255282 6484000 10510564 12968000 13138205 21021128 26276410 42042256 52552820 65691025 84084512 105105640 131382050 168169024 210211280 262764100 328455125 420422560 525528200 656910250 840845120 1051056400 1313820500 2102112800 2627641000 4204225600 5255282000 10510564000 21021128000
• Sum of all divisors σ(n): 52090958556
• Sum of proper divisors (its aliquot sum) s(n): 31069830556
• 21021128000 is an abundant number, because the sum of its proper divisors (31069830556) is greater than itself. Its abundance is 10048702556

Bases of 21021128000

• Binary: 10011100100111101001111010101000000₂
• Hexadecimal: 0x4E4F4F540
• Base-36: 9NNFQ68

Squares and roots of 21021128000

• 21021128000 squared (21021128000²) is 441887822392384000000
• 21021128000 cubed (21021128000³) is 9288980476151570289152000000000
• The square root of 21021128000 is 144986.6476610863
• The cube root of 21021128000 is 2759.8491130843

Scales and comparisons

• 21,021,128,000 seconds is equal to 668 years, 21 weeks, 1 day, 2 hours, 13 minutes, 20 seconds.
• To count from 1 to 21,021,128,000 would take you about one thousand, three hundred thirty-six 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 21021128000 cubic inches would be around 230 feet tall.

Recreational maths with 21021128000

• 21021128000 backwards is 00082112012
• The number of decimal digits it has is: 11
• The sum of 21021128000's digits is 17
• More coming soon!