30721978095

Names of 30721978095

• Cardinal: 30721978095 can be written as Thirty billion, seven hundred twenty-one million, nine hundred seventy-eight thousand and ninety-five.

Scientific notation

• Scientific notation: 3.0721978095 × 10¹⁰

Factors of 30721978095

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 567

Divisors of 30721978095

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 5 15 29 73 87 145 219 365 435 457 841 1095 1371 2117 2285 2523 4205 5329 6351 6855 10585 12615 13253 15987 26645 31755 33361 39759 61393 66265 79935 100083 154541 166805 184179 198795 306965 384337 463623 500415 772705 920895 967469 1153011 1921685 2318115 2435353 2902407 4481689 4837345 5765055 7306059 12176765 13445067 14512035 22408445 28056601 36530295 67225335 70625237 84169803 140283005 211875711 353126185 420849015 1059378555 2048131873 6144395619 10240659365 30721978095
• Sum of all divisors σ(n): 51728494896
• Sum of proper divisors (its aliquot sum) s(n): 21006516801
• 30721978095 is a deficient number, because the sum of its proper divisors (21006516801) is less than itself. Its deficiency is 9715461294

Bases of 30721978095

• Binary: 11100100111001011000010111011101111₂
• Hexadecimal: 0x7272C2EEF
• Base-36: E432M0F

Squares and roots of 30721978095

• 30721978095 squared (30721978095²) is 943839938069659829025
• 30721978095 cubed (30721978095³) is 28996629902562245851407495207375
• The square root of 30721978095 is 175276.8612652563
• The cube root of 30721978095 is 3131.9613335419

Scales and comparisons

• 30,721,978,095 seconds is equal to 976 years, 44 weeks, 6 days, 10 hours, 48 minutes, 15 seconds.
• To count from 1 to 30,721,978,095 would take you about one thousand, nine 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 30721978095 cubic inches would be around 261 feet tall.

Recreational maths with 30721978095

• 30721978095 backwards is 59087912703
• The number of decimal digits it has is: 11
• The sum of 30721978095's digits is 51
• More coming soon!