18280405872

Names of 18280405872

• Cardinal: 18280405872 can be written as Eighteen billion, two hundred eighty million, four hundred five thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.8280405872 × 10¹⁰

Factors of 18280405872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 13682

Divisors of 18280405872

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 31 36 48 62 72 93 124 144 186 248 279 307 372 496 558 614 744 921 1116 1228 1488 1842 2232 2456 2763 3684 4464 4912 5526 7368 9517 11052 13339 14736 19034 22104 26678 28551 38068 40017 44208 53356 57102 76136 80034 85653 106712 114204 120051 152272 160068 171306 213424 228408 240102 320136 342612 413509 456816 480204 640272 685224 827018 960408 1240527 1370448 1654036 1920816 2481054 3308072 3721581 4095073 4962108 6616144 7443162 8190146 9924216 12285219 14886324 16380292 19848432 24570438 29772648 32760584 36855657 49140876 59545296 65521168 73711314 98281752 126947263 147422628 196563504 253894526 294845256 380841789 507789052 589690512 761683578 1015578104 1142525367 1523367156 2031156208 2285050734 3046734312 4570101468 6093468624 9140202936 18280405872
• Sum of all divisors σ(n): 52986053120
• Sum of proper divisors (its aliquot sum) s(n): 34705647248
• 18280405872 is an abundant number, because the sum of its proper divisors (34705647248) is greater than itself. Its abundance is 16425241376

Bases of 18280405872

• Binary: 10001000001100110001101101101110000₂
• Hexadecimal: 0x44198DB70
• Base-36: 8EBOJG0

Squares and roots of 18280405872

• 18280405872 squared (18280405872²) is 334173238845052080384
• 18280405872 cubed (18280405872³) is 6108822437648348548397489614848
• The square root of 18280405872 is 135205.0512074161
• The cube root of 18280405872 is 2634.2800607841

Scales and comparisons

• 18,280,405,872 seconds is equal to 581 years, 13 weeks, 3 days, 18 hours, 31 minutes, 12 seconds.
• To count from 1 to 18,280,405,872 would take you about one thousand, one hundred sixty-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 18280405872 cubic inches would be around 219.5 feet tall.

Recreational maths with 18280405872

• 18280405872 backwards is 27850408281
• The number of decimal digits it has is: 11
• The sum of 18280405872's digits is 45
• More coming soon!