18020730

Names of 18020730

• Cardinal: 18020730 can be written as Eighteen million, twenty thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 1.802073 × 10⁷

Factors of 18020730

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 94

Divisors of 18020730

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 7 10 13 14 15 21 23 26 30 35 39 41 42 46 49 65 69 70 78 82 91 98 105 115 123 130 138 147 161 182 195 205 210 230 245 246 273 287 294 299 322 345 390 410 455 483 490 533 546 574 598 615 637 690 735 805 861 897 910 943 966 1066 1127 1230 1274 1365 1435 1470 1495 1599 1610 1722 1794 1886 1911 2009 2093 2254 2415 2665 2730 2829 2870 2990 3185 3198 3381 3731 3822 4018 4186 4305 4485 4715 4830 5330 5635 5658 6027 6279 6370 6601 6762 7462 7995 8610 8970 9430 9555 10045 10465 11193 11270 12054 12259 12558 13202 14145 14651 15990 16905 18655 19110 19803 20090 20930 22386 24518 26117 28290 29302 30135 31395 33005 33810 36777 37310 39606 43953 46207 52234 55965 60270 61295 62790 66010 73255 73554 78351 85813 87906 92414 99015 111930 122590 130585 138621 146510 156702 171626 183885 198030 219765 231035 257439 261170 277242 367770 391755 429065 439530 462070 514878 600691 693105 783510 858130 1201382 1287195 1386210 1802073 2574390 3003455 3604146 6006910 9010365 18020730
• Sum of all divisors σ(n): 57915648
• Sum of proper divisors (its aliquot sum) s(n): 39894918
• 18020730 is an abundant number, because the sum of its proper divisors (39894918) is greater than itself. Its abundance is 21874188

Bases of 18020730

• Binary: 1000100101111100101111010₂
• Hexadecimal: 0x112F97A
• Base-36: AQ8VU

Squares and roots of 18020730

• 18020730 squared (18020730²) is 324746709732900
• 18020730 cubed (18020730³) is 5852172774484963017000
• The square root of 18020730 is 4245.0830380571
• The cube root of 18020730 is 262.1747081737

Scales and comparisons

• 18,020,730 seconds is equal to 29 weeks, 5 days, 13 hours, 45 minutes, 30 seconds.
• To count from 1 to 18,020,730 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 18020730 cubic inches would be around 21.8 feet tall.

Recreational maths with 18020730

• 18020730 backwards is 03702081
• 18020730 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18020730's digits is 21
• More coming soon!