21680647272

Names of 21680647272

• Cardinal: 21680647272 can be written as Twenty-one billion, six hundred eighty million, six hundred forty-seven thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 2.1680647272 × 10¹⁰

Factors of 21680647272

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 139075

Divisors of 21680647272

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 241 324 482 648 723 964 1446 1928 2169 2892 4338 5784 6507 8676 13014 17352 19521 26028 39042 52056 78084 138829 156168 277658 416487 555316 832974 1110632 1249461 1665948 2498922 3331896 3748383 4997844 7496766 9995688 11245149 14993532 22490298 29987064 33457789 44980596 66915578 89961192 100373367 133831156 200746734 267662312 301120101 401493468 602240202 802986936 903360303 1204480404 1806720606 2408960808 2710080909 3613441212 5420161818 7226882424 10840323636 21680647272
• Sum of all divisors σ(n): 60978300900
• Sum of proper divisors (its aliquot sum) s(n): 39297653628
• 21680647272 is an abundant number, because the sum of its proper divisors (39297653628) is greater than itself. Its abundance is 17617006356

Bases of 21680647272

• Binary: 10100001100010001000110110001101000₂
• Hexadecimal: 0x50C446C68
• Base-36: 9YK3II0

Squares and roots of 21680647272

• 21680647272 squared (21680647272²) is 470050466132881041984
• 21680647272 cubed (21680647272³) is 10190998356266175752390927067648
• The square root of 21680647272 is 147243.4965355007
• The cube root of 21680647272 is 2788.4150276157

Scales and comparisons

• 21,680,647,272 seconds is equal to 689 years, 19 weeks, 4 days, 10 hours, 1 minute, 12 seconds.
• To count from 1 to 21,680,647,272 would take you about one thousand, three hundred seventy-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 21680647272 cubic inches would be around 232.4 feet tall.

Recreational maths with 21680647272

• 21680647272 backwards is 27274608612
• The number of decimal digits it has is: 11
• The sum of 21680647272's digits is 45
• More coming soon!