21288808008

Names of 21288808008

• Cardinal: 21288808008 can be written as Twenty-one billion, two hundred eighty-eight million, eight hundred eight thousand and eight.

Scientific notation

• Scientific notation: 2.1288808008 × 10¹⁰

Factors of 21288808008

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1337944

Divisors of 21288808008

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 17 18 24 26 34 36 39 51 52 68 72 78 102 104 117 136 153 156 204 221 234 306 312 408 442 468 612 663 884 936 1224 1326 1768 1989 2652 3978 5304 7956 15912 1337909 2675818 4013727 5351636 8027454 10703272 12041181 16054908 17392817 22744453 24082362 32109816 34785634 45488906 48164724 52178451 68233359 69571268 90977812 96329448 104356902 136466718 139142536 156535353 181955624 204700077 208713804 272933436 295677889 313070706 409400154 417427608 545866872 591355778 626141412 818800308 887033667 1182711556 1252282824 1637600616 1774067334 2365423112 2661101001 3548134668 5322202002 7096269336 10644404004 21288808008
• Sum of all divisors σ(n): 65744897400
• Sum of proper divisors (its aliquot sum) s(n): 44456089392
• 21288808008 is an abundant number, because the sum of its proper divisors (44456089392) is greater than itself. Its abundance is 23167281384

Bases of 21288808008

• Binary: 10011110100111010010110111001001000₂
• Hexadecimal: 0x4F4E96E48
• Base-36: 9S2T1E0

Squares and roots of 21288808008

• 21288808008 squared (21288808008²) is 453213346401484928064
• 21288808008 cubed (21288808008³) is 9648371918204410319660187136512
• The square root of 21288808008 is 145906.8470223381
• The cube root of 21288808008 is 2771.5142449493

Scales and comparisons

• 21,288,808,008 seconds is equal to 676 years, 47 weeks, 5 days, 5 hours, 46 minutes, 48 seconds.
• To count from 1 to 21,288,808,008 would take you about one thousand, three hundred fifty-three 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 21288808008 cubic inches would be around 231 feet tall.

Recreational maths with 21288808008

• 21288808008 backwards is 80080888212
• The number of decimal digits it has is: 11
• The sum of 21288808008's digits is 45
• More coming soon!