21427929565

Names of 21427929565

• Cardinal: 21427929565 can be written as Twenty-one billion, four hundred twenty-seven million, nine hundred twenty-nine thousand, five hundred sixty-five.

Scientific notation

• Scientific notation: 2.1427929565 × 10¹⁰

Factors of 21427929565

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 213

Divisors of 21427929565

• Number of divisors d(n): 108
• Complete list of divisors:
  1 5 7 17 35 47 49 85 119 137 235 245 289 329 595 685 799 833 959 1445 1645 2023 2209 2303 2329 3995 4165 4795 5593 6439 6713 10115 11045 11515 11645 13583 14161 15463 16303 27965 32195 33565 37553 39151 39593 45073 67915 70805 77315 81515 95081 108241 109463 114121 187765 195755 197965 225365 262871 277151 302633 315511 475405 541205 547315 570605 638401 665567 766241 1314355 1385755 1513165 1577555 1840097 1860871 1940057 2118431 3192005 3327835 3831205 4468807 5144761 5363687 9200485 9304355 9700285 10592155 13026097 14829017 22344035 25723805 26818435 31281649 36013327 65130485 74145085 87460937 91182679 156408245 180066635 252093289 437304685 455913395 612226559 1260466445 3061132795 4285585913 21427929565
• Sum of all divisors σ(n): 32702061204
• Sum of proper divisors (its aliquot sum) s(n): 11274131639
• 21427929565 is a deficient number, because the sum of its proper divisors (11274131639) is less than itself. Its deficiency is 10153797926

Bases of 21427929565

• Binary: 10011111101001101000100000111011101₂
• Hexadecimal: 0x4FD3441DD
• Base-36: 9UDMW9P

Squares and roots of 21427929565

• 21427929565 squared (21427929565²) is 459156165442601089225
• 21427929565 cubed (21427929565³) is 9838765972439543190305580437125
• The square root of 21427929565 is 146382.8185443907
• The cube root of 21427929565 is 2777.5383884299

Scales and comparisons

• 21,427,929,565 seconds is equal to 681 years, 17 weeks, 5 days, 10 hours, 39 minutes, 25 seconds.
• To count from 1 to 21,427,929,565 would take you about one thousand, three hundred sixty-two 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 21427929565 cubic inches would be around 231.5 feet tall.

Recreational maths with 21427929565

• 21427929565 backwards is 56592972412
• The number of decimal digits it has is: 11
• The sum of 21427929565's digits is 52
• More coming soon!