81001350

Names of 81001350

• Cardinal: 81001350 can be written as Eighty-one million, one thousand, three hundred fifty.

Scientific notation

• Scientific notation: 8.100135 × 10⁷

Factors of 81001350

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2108

Divisors of 81001350

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 25 27 29 30 45 50 54 58 75 87 90 135 145 150 174 225 261 270 290 435 450 522 675 725 783 870 1305 1350 1450 1566 2069 2175 2610 3915 4138 4350 6207 6525 7830 10345 12414 13050 18621 19575 20690 31035 37242 39150 51725 55863 60001 62070 93105 103450 111726 120002 155175 180003 186210 279315 300005 310350 360006 465525 540009 558630 600010 900015 931050 1080018 1396575 1500025 1620027 1800030 2700045 2793150 3000050 3240054 4500075 5400090 8100135 9000150 13500225 16200270 27000450 40500675 81001350
• Sum of all divisors σ(n): 231012000
• Sum of proper divisors (its aliquot sum) s(n): 150010650
• 81001350 is an abundant number, because the sum of its proper divisors (150010650) is greater than itself. Its abundance is 69009300

Bases of 81001350

• Binary: 100110100111111101110000110₂
• Hexadecimal: 0x4D3FB86
• Base-36: 1C851I

Squares and roots of 81001350

• 81001350 squared (81001350²) is 6561218701822500
• 81001350 cubed (81001350³) is 531467572492869960375000
• The square root of 81001350 is 9000.0749996875
• The cube root of 81001350 is 432.6772748281

Scales and comparisons

• 81,001,350 seconds is equal to 2 years, 29 weeks, 6 days, 12 hours, 22 minutes, 30 seconds.
• To count from 1 to 81,001,350 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 81001350 cubic inches would be around 36.1 feet tall.

Recreational maths with 81001350

• 81001350 backwards is 05310018
• 81001350 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 81001350's digits is 18
• More coming soon!