21231211568

Names of 21231211568

• Cardinal: 21231211568 can be written as Twenty-one billion, two hundred thirty-one million, two hundred eleven thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1231211568 × 10¹⁰

Factors of 21231211568

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 6771

Divisors of 21231211568

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 56 98 112 196 343 392 631 686 784 1262 1372 2524 2744 4417 5048 5488 6131 8834 10096 12262 17668 24524 30919 35336 42917 49048 61838 70672 85834 98096 123676 171668 216433 247352 300419 343336 432866 494704 600838 686672 865732 1201676 1731464 2102933 2403352 3462928 3868661 4205866 4806704 7737322 8411732 15474644 16823464 27080627 30949288 33646928 54161254 61898576 108322508 189564389 216645016 379128778 433290032 758257556 1326950723 1516515112 2653901446 3033030224 5307802892 10615605784 21231211568
• Sum of all divisors σ(n): 48055257600
• Sum of proper divisors (its aliquot sum) s(n): 26824046032
• 21231211568 is an abundant number, because the sum of its proper divisors (26824046032) is greater than itself. Its abundance is 5592834464

Bases of 21231211568

• Binary: 10011110001011110101001010000110000₂
• Hexadecimal: 0x4F17A9430
• Base-36: 9R4IJOW

Squares and roots of 21231211568

• 21231211568 squared (21231211568²) is 450764344645177018624
• 21231211568 cubed (21231211568³) is 9570273168472621173217620242432
• The square root of 21231211568 is 145709.3393300513
• The cube root of 21231211568 is 2769.0125622401

Scales and comparisons

• 21,231,211,568 seconds is equal to 675 years, 4 weeks, 3 days, 14 hours, 46 minutes, 8 seconds.
• To count from 1 to 21,231,211,568 would take you about one thousand, three hundred fifty 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 21231211568 cubic inches would be around 230.8 feet tall.

Recreational maths with 21231211568

• 21231211568 backwards is 86511213212
• The number of decimal digits it has is: 11
• The sum of 21231211568's digits is 32
• More coming soon!