18030870

Names of 18030870

• Cardinal: 18030870 can be written as Eighteen million, thirty thousand, eight hundred seventy.

Scientific notation

• Scientific notation: 1.803087 × 10⁷

Factors of 18030870

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 501

Divisors of 18030870

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 9 10 11 13 15 18 22 26 27 30 33 39 45 54 55 65 66 78 90 99 110 117 130 135 143 165 195 198 234 270 286 297 330 351 390 429 467 495 585 594 702 715 858 934 990 1170 1287 1401 1430 1485 1755 2145 2335 2574 2802 2970 3510 3861 4203 4290 4670 5137 6071 6435 7005 7722 8406 10274 12142 12609 12870 14010 15411 18213 19305 21015 25218 25685 30355 30822 36426 38610 42030 46233 51370 54639 60710 63045 66781 77055 91065 92466 109278 126090 133562 138699 154110 163917 182130 200343 231165 273195 277398 327834 333905 400686 462330 546390 601029 667810 693495 819585 1001715 1202058 1386990 1639170 1803087 2003430 3005145 3606174 6010290 9015435 18030870
• Sum of all divisors σ(n): 56609280
• Sum of proper divisors (its aliquot sum) s(n): 38578410
• 18030870 is an abundant number, because the sum of its proper divisors (38578410) is greater than itself. Its abundance is 20547540

Bases of 18030870

• Binary: 1000100110010000100010110₂
• Hexadecimal: 0x1132116
• Base-36: AQGPI

Squares and roots of 18030870

• 18030870 squared (18030870²) is 325112272956900
• 18030870 cubed (18030870³) is 5862057129090379503000
• The square root of 18030870 is 4246.2771930245
• The cube root of 18030870 is 262.2238729055

Scales and comparisons

• 18,030,870 seconds is equal to 29 weeks, 5 days, 16 hours, 34 minutes, 30 seconds.
• To count from 1 to 18,030,870 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 18030870 cubic inches would be around 21.9 feet tall.

Recreational maths with 18030870

• 18030870 backwards is 07803081
• 18030870 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18030870's digits is 27
• More coming soon!