21681589552

Names of 21681589552

• Cardinal: 21681589552 can be written as Twenty-one billion, six hundred eighty-one million, five hundred eighty-nine thousand, five hundred fifty-two.

Scientific notation

• Scientific notation: 2.1681589552 × 10¹⁰

Factors of 21681589552

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 15980

Divisors of 21681589552

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 7 8 14 16 28 47 56 94 112 188 263 329 376 526 658 752 1052 1316 1841 2104 2632 3682 4208 5264 7364 12361 14728 15661 24722 29456 31322 49444 62644 86527 98888 109627 125288 173054 197776 219254 250576 346108 438508 692216 736067 877016 1384432 1472134 1754032 2944268 4118843 5152469 5888536 8237686 10304938 11777072 16475372 20609876 28831901 32950744 41219752 57663802 65901488 82439504 115327604 193585621 230655208 387171242 461310416 774342484 1355099347 1548684968 2710198694 3097369936 5420397388 10840794776 21681589552
• Sum of all divisors σ(n): 49220278272
• Sum of proper divisors (its aliquot sum) s(n): 27538688720
• 21681589552 is an abundant number, because the sum of its proper divisors (27538688720) is greater than itself. Its abundance is 5857099168

Bases of 21681589552

• Binary: 10100001100010100101100110100110000₂
• Hexadecimal: 0x50C52CD30
• Base-36: 9YKNPKG

Squares and roots of 21681589552

• 21681589552 squared (21681589552²) is 470091325501395560704
• 21681589552 cubed (21681589552³) is 10192327171476889150379028164608
• The square root of 21681589552 is 147246.6962345845
• The cube root of 21681589552 is 2788.4554235445

Scales and comparisons

• 21,681,589,552 seconds is equal to 689 years, 21 weeks, 1 day, 7 hours, 45 minutes, 52 seconds.
• To count from 1 to 21,681,589,552 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 21681589552 cubic inches would be around 232.4 feet tall.

Recreational maths with 21681589552

• 21681589552 backwards is 25598518612
• The number of decimal digits it has is: 11
• The sum of 21681589552's digits is 52
• More coming soon!