18147840

Names of 18147840

• Cardinal: 18147840 can be written as Eighteen million, one hundred forty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.814784 × 10⁷

Factors of 18147840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 166

Divisors of 18147840

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 64 68 80 85 96 102 120 128 136 139 160 170 192 204 240 255 256 272 278 320 340 384 408 417 480 510 512 544 556 640 680 695 768 816 834 960 1020 1088 1112 1280 1360 1390 1536 1632 1668 1920 2040 2085 2176 2224 2363 2560 2720 2780 3264 3336 3840 4080 4170 4352 4448 4726 5440 5560 6528 6672 7089 7680 8160 8340 8704 8896 9452 10880 11120 11815 13056 13344 14178 16320 16680 17792 18904 21760 22240 23630 26112 26688 28356 32640 33360 35445 35584 37808 43520 44480 47260 53376 56712 65280 66720 70890 71168 75616 88960 94520 106752 113424 130560 133440 141780 151232 177920 189040 213504 226848 266880 283560 302464 355840 378080 453696 533760 567120 604928 756160 907392 1067520 1134240 1209856 1512320 1814784 2268480 3024640 3629568 4536960 6049280 9073920 18147840
• Sum of all divisors σ(n): 61871040
• Sum of proper divisors (its aliquot sum) s(n): 43723200
• 18147840 is an abundant number, because the sum of its proper divisors (43723200) is greater than itself. Its abundance is 25575360

Bases of 18147840

• Binary: 1000101001110101000000000₂
• Hexadecimal: 0x114EA00
• Base-36: ASYYO

Squares and roots of 18147840

• 18147840 squared (18147840²) is 329344096665600
• 18147840 cubed (18147840³) is 5976883971231842304000
• The square root of 18147840 is 4260.0281689209
• The cube root of 18147840 is 262.7896847329

Scales and comparisons

• 18,147,840 seconds is equal to 30 weeks, 1 hour, 4 minutes.
• To count from 1 to 18,147,840 would take you about forty-five 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 18147840 cubic inches would be around 21.9 feet tall.

Recreational maths with 18147840

• 18147840 backwards is 04874181
• The number of decimal digits it has is: 8
• The sum of 18147840's digits is 33
• More coming soon!