21011243008

Names of 21011243008

• Cardinal: 21011243008 can be written as Twenty-one billion, eleven million, two hundred forty-three thousand and eight.

Scientific notation

• Scientific notation: 2.1011243008 × 10¹⁰

Factors of 21011243008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 2937

Divisors of 21011243008

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 56 64 112 128 131 224 256 262 448 512 524 896 917 1024 1048 1792 1834 2048 2096 2797 3584 3668 4096 4192 5594 7168 7336 8192 8384 11188 14336 14672 16768 19579 22376 28672 29344 33536 39158 44752 57344 58688 67072 78316 89504 117376 134144 156632 179008 234752 268288 313264 358016 366407 469504 536576 626528 716032 732814 939008 1073152 1253056 1432064 1465628 1878016 2506112 2564849 2864128 2931256 3756032 5012224 5129698 5728256 5862512 7512064 10024448 10259396 11456512 11725024 20048896 20518792 22913024 23450048 40097792 41037584 46900096 80195584 82075168 93800192 160391168 164150336 187600384 328300672 375200768 656601344 750401536 1313202688 1500803072 2626405376 3001606144 5252810752 10505621504 21011243008
• Sum of all divisors σ(n): 48406653504
• Sum of proper divisors (its aliquot sum) s(n): 27395410496
• 21011243008 is an abundant number, because the sum of its proper divisors (27395410496) is greater than itself. Its abundance is 6384167488

Bases of 21011243008

• Binary: 10011100100010111100010000000000000₂
• Hexadecimal: 0x4E45E2000
• Base-36: 9NHJUV4

Squares and roots of 21011243008

• 21011243008 squared (21011243008²) is 441472332741228888064
• 21011243008 cubed (21011243008³) is 9275882464534594947662334656512
• The square root of 21011243008 is 144952.5543341683
• The cube root of 21011243008 is 2759.4164473755

Scales and comparisons

• 21,011,243,008 seconds is equal to 668 years, 4 weeks, 5 days, 16 hours, 23 minutes, 28 seconds.
• To count from 1 to 21,011,243,008 would take you about one thousand, three hundred thirty-six 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 21011243008 cubic inches would be around 230 feet tall.

Recreational maths with 21011243008

• 21011243008 backwards is 80034211012
• The number of decimal digits it has is: 11
• The sum of 21011243008's digits is 22
• More coming soon!