18121824

Names of 18121824

• Cardinal: 18121824 can be written as Eighteen million, one hundred twenty-one thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 1.8121824 × 10⁷

Factors of 18121824

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 202

Divisors of 18121824

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 72 84 89 96 101 112 126 144 168 178 202 224 252 267 288 303 336 356 404 504 534 606 623 672 707 712 801 808 909 1008 1068 1212 1246 1414 1424 1602 1616 1818 1869 2016 2121 2136 2424 2492 2828 2848 3204 3232 3636 3738 4242 4272 4848 4984 5607 5656 6363 6408 7272 7476 8484 8544 8989 9696 9968 11214 11312 12726 12816 14544 14952 16968 17978 19936 22428 22624 25452 25632 26967 29088 29904 33936 35956 44856 50904 53934 59808 62923 67872 71912 80901 89712 101808 107868 125846 143824 161802 179424 188769 203616 215736 251692 287648 323604 377538 431472 503384 566307 647208 755076 862944 1006768 1132614 1294416 1510152 2013536 2265228 2588832 3020304 4530456 6040608 9060912 18121824
• Sum of all divisors σ(n): 60147360
• Sum of proper divisors (its aliquot sum) s(n): 42025536
• 18121824 is an abundant number, because the sum of its proper divisors (42025536) is greater than itself. Its abundance is 23903712

Bases of 18121824

• Binary: 1000101001000010001100000₂
• Hexadecimal: 0x1148460
• Base-36: ASEW0

Squares and roots of 18121824

• 18121824 squared (18121824²) is 328400505086976
• 18121824 cubed (18121824³) is 5951216154697283764224
• The square root of 18121824 is 4256.9735728567
• The cube root of 18121824 is 262.6640498363

Scales and comparisons

• 18,121,824 seconds is equal to 29 weeks, 6 days, 17 hours, 50 minutes, 24 seconds.
• To count from 1 to 18,121,824 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 18121824 cubic inches would be around 21.9 feet tall.

Recreational maths with 18121824

• 18121824 backwards is 42812181
• The number of decimal digits it has is: 8
• The sum of 18121824's digits is 27
• More coming soon!