21049704320

Names of 21049704320

• Cardinal: 21049704320 can be written as Twenty-one billion, forty-nine million, seven hundred four thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.104970432 × 10¹⁰

Factors of 21049704320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 17492

Divisors of 21049704320

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 16 20 31 32 40 61 62 64 80 122 124 128 155 160 244 248 305 310 320 488 496 610 620 640 976 992 1220 1240 1891 1952 1984 2440 2480 3782 3904 3968 4880 4960 7564 7808 9455 9760 9920 15128 17393 18910 19520 19840 30256 34786 37820 39040 60512 69572 75640 86965 121024 139144 151280 173930 242048 278288 302560 347860 539183 556576 605120 695720 1060973 1078366 1113152 1210240 1391440 2121946 2156732 2226304 2695915 2782880 4243892 4313464 5304865 5391830 5565760 8487784 8626928 10609730 10783660 11131520 16975568 17253856 21219460 21567320 32890163 33951136 34507712 42438920 43134640 65780326 67902272 69015424 84877840 86269280 131560652 135804544 164450815 169755680 172538560 263121304 328901630 339511360 345077120 526242608 657803260 679022720 1052485216 1315606520 2104970432 2631213040 4209940864 5262426080 10524852160 21049704320
• Sum of all divisors σ(n): 52799834880
• Sum of proper divisors (its aliquot sum) s(n): 31750130560
• 21049704320 is an abundant number, because the sum of its proper divisors (31750130560) is greater than itself. Its abundance is 10700426240

Bases of 21049704320

• Binary: 10011100110101010001111111110000000₂
• Hexadecimal: 0x4E6A8FF80
• Base-36: 9O4G7SW

Squares and roots of 21049704320

• 21049704320 squared (21049704320²) is 443090051959426662400
• 21049704320 cubed (21049704320³) is 9326914580879367880244461568000
• The square root of 21049704320 is 145085.1623013187
• The cube root of 21049704320 is 2761.0991351441

Scales and comparisons

• 21,049,704,320 seconds is equal to 669 years, 16 weeks, 2 days, 20 hours, 5 minutes, 20 seconds.
• To count from 1 to 21,049,704,320 would take you about one thousand, three hundred thirty-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 21049704320 cubic inches would be around 230.1 feet tall.

Recreational maths with 21049704320

• 21049704320 backwards is 02340794012
• 21049704320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21049704320's digits is 32
• More coming soon!