18080640

Names of 18080640

• Cardinal: 18080640 can be written as Eighteen million, eighty thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.808064 × 10⁷

Factors of 18080640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 126

Divisors of 18080640

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 43 45 48 60 64 72 73 80 86 90 96 120 128 129 144 146 160 172 180 192 215 219 240 258 288 292 320 344 360 365 384 387 430 438 480 516 576 584 640 645 657 688 720 730 774 860 876 960 1032 1095 1152 1168 1290 1314 1376 1440 1460 1548 1720 1752 1920 1935 2064 2190 2336 2580 2628 2752 2880 2920 3096 3139 3285 3440 3504 3870 4128 4380 4672 5160 5256 5504 5760 5840 6192 6278 6570 6880 7008 7740 8256 8760 9344 9417 10320 10512 11680 12384 12556 13140 13760 14016 15480 15695 16512 17520 18834 20640 21024 23360 24768 25112 26280 27520 28032 28251 30960 31390 35040 37668 41280 42048 46720 47085 49536 50224 52560 56502 61920 62780 70080 75336 82560 84096 94170 100448 105120 113004 123840 125560 140160 141255 150672 188340 200896 210240 226008 247680 251120 282510 301344 376680 401792 420480 452016 502240 565020 602688 753360 904032 1004480 1130040 1205376 1506720 1808064 2008960 2260080 3013440 3616128 4520160 6026880 9040320 18080640
• Sum of all divisors σ(n): 64761840
• Sum of proper divisors (its aliquot sum) s(n): 46681200
• 18080640 is an abundant number, because the sum of its proper divisors (46681200) is greater than itself. Its abundance is 28600560

Bases of 18080640

• Binary: 1000100111110001110000000₂
• Hexadecimal: 0x113E380
• Base-36: ARJ40

Squares and roots of 18080640

• 18080640 squared (18080640²) is 326909542809600
• 18080640 cubed (18080640³) is 5910733756104966144000
• The square root of 18080640 is 4252.1335820973
• The cube root of 18080640 is 262.4649204823

Scales and comparisons

• 18,080,640 seconds is equal to 29 weeks, 6 days, 6 hours, 24 minutes.
• To count from 1 to 18,080,640 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 18080640 cubic inches would be around 21.9 feet tall.

Recreational maths with 18080640

• 18080640 backwards is 04608081
• The number of decimal digits it has is: 8
• The sum of 18080640's digits is 27
• More coming soon!