6639474420

Names of 6639474420

• Cardinal: 6639474420 can be written as Six billion, six hundred thirty-nine million, four hundred seventy-four thousand, four hundred twenty.

Scientific notation

• Scientific notation: 6.63947442 × 10⁹

Factors of 6639474420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 17382

Divisors of 6639474420

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 79 81 90 108 135 158 162 180 237 243 270 316 324 395 405 474 486 540 711 790 810 948 972 1185 1215 1422 1580 1620 2133 2370 2430 2844 3555 4266 4740 4860 6399 7110 8532 10665 12798 14220 17293 19197 21330 25596 31995 34586 38394 42660 51879 63990 69172 76788 86465 95985 103758 127980 155637 172930 191970 207516 259395 311274 345860 383940 466911 518790 622548 778185 933822 1037580 1366147 1400733 1556370 1867644 2334555 2732294 2801466 3112740 4098441 4202199 4669110 5464588 5602932 6830735 7003665 8196882 8404398 9338220 12295323 13661470 14007330 16393764 16808796 20492205 21010995 24590646 27322940 28014660 36885969 40984410 42021990 49181292 61476615 73771938 81968820 84043980 110657907 122953230 147543876 184429845 221315814 245906460 331973721 368859690 442631628 553289535 663947442 737719380 1106579070 1327894884 1659868605 2213158140 3319737210 6639474420
• Sum of all divisors σ(n): 21151253760
• Sum of proper divisors (its aliquot sum) s(n): 14511779340
• 6639474420 is an abundant number, because the sum of its proper divisors (14511779340) is greater than itself. Its abundance is 7872304920

Bases of 6639474420

• Binary: 110001011101111100101011011110100₂
• Hexadecimal: 0x18BBE56F4
• Base-36: 31SYZ90

Squares and roots of 6639474420

• 6639474420 squared (6639474420²) is 44082620573834336400
• 6639474420 cubed (6639474420³) is 292685431666538797845474888000
• The square root of 6639474420 is 81482.9701225967
• The cube root of 6639474420 is 1879.5096823787

Scales and comparisons

• 6,639,474,420 seconds is equal to 211 years, 5 weeks, 6 days, 18 hours, 27 minutes.
• To count from 1 to 6,639,474,420 would take you about four hundred twenty-two 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 6639474420 cubic inches would be around 156.6 feet tall.

Recreational maths with 6639474420

• 6639474420 backwards is 0244749366
• 6639474420 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 6639474420's digits is 45
• More coming soon!