81804000

Names of 81804000

• Cardinal: 81804000 can be written as Eighty-one million, eight hundred four thousand.

Scientific notation

• Scientific notation: 8.1804 × 10⁷

Factors of 81804000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 428

Divisors of 81804000

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 25 30 32 34 40 48 50 51 60 68 75 80 85 96 100 102 120 125 136 150 160 170 200 204 240 250 255 272 300 340 375 400 401 408 425 480 500 510 544 600 680 750 800 802 816 850 1000 1020 1200 1203 1275 1360 1500 1604 1632 1700 2000 2005 2040 2125 2400 2406 2550 2720 3000 3208 3400 4000 4010 4080 4250 4812 5100 6000 6015 6375 6416 6800 6817 8020 8160 8500 9624 10025 10200 12000 12030 12750 12832 13600 13634 16040 17000 19248 20050 20400 20451 24060 25500 27268 30075 32080 34000 34085 38496 40100 40800 40902 48120 50125 51000 54536 60150 64160 68000 68170 80200 81804 96240 100250 102000 102255 109072 120300 136340 150375 160400 163608 170425 192480 200500 204000 204510 218144 240600 272680 300750 320800 327216 340850 401000 409020 481200 511275 545360 601500 654432 681700 802000 818040 852125 962400 1022550 1090720 1203000 1363400 1604000 1636080 1704250 2045100 2406000 2556375 2726800 3272160 3408500 4090200 4812000 5112750 5453600 6817000 8180400 10225500 13634000 16360800 20451000 27268000 40902000 81804000
• Sum of all divisors σ(n): 284461632
• Sum of proper divisors (its aliquot sum) s(n): 202657632
• 81804000 is an abundant number, because the sum of its proper divisors (202657632) is greater than itself. Its abundance is 120853632

Bases of 81804000

• Binary: 100111000000011101011100000₂
• Hexadecimal: 0x4E03AE0
• Base-36: 1CPCDC

Squares and roots of 81804000

• 81804000 squared (81804000²) is 6691894416000000
• 81804000 cubed (81804000³) is 547423730806464000000000
• The square root of 81804000 is 9044.5563738637
• The cube root of 81804000 is 434.1017267399

Scales and comparisons

• 81,804,000 seconds is equal to 2 years, 31 weeks, 1 day, 19 hours, 20 minutes.
• To count from 1 to 81,804,000 would take you about three years!

  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 81804000 cubic inches would be around 36.2 feet tall.

Recreational maths with 81804000

• 81804000 backwards is 00040818
• The number of decimal digits it has is: 8
• The sum of 81804000's digits is 21
• More coming soon!