21243750912

Names of 21243750912

• Cardinal: 21243750912 can be written as Twenty-one billion, two hundred forty-three million, seven hundred fifty thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 2.1243750912 × 10¹⁰

Factors of 21243750912

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 200471

Divisors of 21243750912

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 32 36 46 48 64 69 72 92 96 128 138 144 184 192 207 256 276 288 368 384 414 512 552 576 736 768 828 1104 1152 1472 1536 1656 2208 2304 2944 3312 4416 4608 5888 6624 8832 11776 13248 17664 26496 35328 52992 105984 200443 400886 601329 801772 1202658 1603544 1803987 2405316 3207088 3607974 4610189 4810632 6414176 7215948 9220378 9621264 12828352 13830567 14431896 18440756 19242528 25656704 27661134 28863792 36881512 38485056 41491701 51313408 55322268 57727584 73763024 76970112 82983402 102626816 110644536 115455168 147526048 153940224 165966804 221289072 230910336 295052096 307880448 331933608 442578144 461820672 590104192 663867216 885156288 923641344 1180208384 1327734432 1770312576 2360416768 2655468864 3540625152 5310937728 7081250304 10621875456 21243750912
• Sum of all divisors σ(n): 63976914144
• Sum of proper divisors (its aliquot sum) s(n): 42733163232
• 21243750912 is an abundant number, because the sum of its proper divisors (42733163232) is greater than itself. Its abundance is 21489412320

Bases of 21243750912

• Binary: 10011110010001110011110101000000000₂
• Hexadecimal: 0x4F239EA00
• Base-36: 9RBZB40

Squares and roots of 21243750912

• 21243750912 squared (21243750912²) is 451296952811100831744
• 21243750912 cubed (21243750912³) is 9587240052863644258085558550528
• The square root of 21243750912 is 145752.3616000783
• The cube root of 21243750912 is 2769.5575895075

Scales and comparisons

• 21,243,750,912 seconds is equal to 675 years, 25 weeks, 1 day, 17 hours, 55 minutes, 12 seconds.
• To count from 1 to 21,243,750,912 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 21243750912 cubic inches would be around 230.8 feet tall.

Recreational maths with 21243750912

• 21243750912 backwards is 21905734212
• 21243750912 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21243750912's digits is 36
• More coming soon!