18091008

Names of 18091008

• Cardinal: 18091008 can be written as Eighteen million, ninety-one thousand and eight.

Scientific notation

• Scientific notation: 1.8091008 × 10⁷

Factors of 18091008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 169

Divisors of 18091008

• Number of divisors d(n): 132
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 64 72 78 96 104 117 128 144 151 156 192 208 234 256 288 302 312 384 416 453 468 512 576 604 624 768 832 906 936 1024 1152 1208 1248 1359 1536 1664 1812 1872 1963 2304 2416 2496 2718 3072 3328 3624 3744 3926 4608 4832 4992 5436 5889 6656 7248 7488 7852 9216 9664 9984 10872 11778 13312 14496 14976 15704 17667 19328 19968 21744 23556 28992 29952 31408 35334 38656 39936 43488 47112 57984 59904 62816 70668 77312 86976 94224 115968 119808 125632 141336 154624 173952 188448 231936 251264 282672 347904 376896 463872 502528 565344 695808 753792 1005056 1130688 1391616 1507584 2010112 2261376 3015168 4522752 6030336 9045504 18091008
• Sum of all divisors σ(n): 56628208
• Sum of proper divisors (its aliquot sum) s(n): 38537200
• 18091008 is an abundant number, because the sum of its proper divisors (38537200) is greater than itself. Its abundance is 20446192

Bases of 18091008

• Binary: 1000101000000110000000000₂
• Hexadecimal: 0x1140C00
• Base-36: ARR40

Squares and roots of 18091008

• 18091008 squared (18091008²) is 327284570456064
• 18091008 cubed (18091008³) is 5920907782397217472512
• The square root of 18091008 is 4253.3525600401
• The cube root of 18091008 is 262.5150794059

Scales and comparisons

• 18,091,008 seconds is equal to 29 weeks, 6 days, 9 hours, 16 minutes, 48 seconds.
• To count from 1 to 18,091,008 would take you about forty-four weeks!

  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 18091008 cubic inches would be around 21.9 feet tall.

Recreational maths with 18091008

• 18091008 backwards is 80019081
• The number of decimal digits it has is: 8
• The sum of 18091008's digits is 27
• More coming soon!