81821323800

Names of 81821323800

• Cardinal: 81821323800 can be written as Eighty-one billion, eight hundred twenty-one million, three hundred twenty-three thousand, eight hundred.

Scientific notation

• Scientific notation: 8.18213238 × 10¹⁰

Factors of 81821323800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 5050709

Divisors of 81821323800

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 45 50 54 60 72 75 81 90 100 108 120 135 150 162 180 200 216 225 270 300 324 360 405 450 540 600 648 675 810 900 1080 1350 1620 1800 2025 2700 3240 4050 5400 8100 16200 5050699 10101398 15152097 20202796 25253495 30304194 40405592 45456291 50506990 60608388 75760485 90912582 101013980 121216776 126267475 136368873 151520970 181825164 202027960 227281455 252534950 272737746 303041940 363650328 378802425 409106619 454562910 505069900 545475492 606083880 681844365 757604850 818213238 909125820 1010139800 1090950984 1136407275 1363688730 1515209700 1636426476 1818251640 2045533095 2272814550 2727377460 3030419400 3272852952 3409221825 4091066190 4545629100 5454754920 6818443650 8182132380 9091258200 10227665475 13636887300 16364264760 20455330950 27273774600 40910661900 81821323800
• Sum of all divisors σ(n): 284177635500
• Sum of proper divisors (its aliquot sum) s(n): 202356311700
• 81821323800 is an abundant number, because the sum of its proper divisors (202356311700) is greater than itself. Its abundance is 120534987900

Bases of 81821323800

• Binary: 1001100001100111011100101001000011000₂
• Hexadecimal: 0x130CEE5218
• Base-36: 11L6AXI0

Squares and roots of 81821323800

• 81821323800 squared (81821323800²) is 6694729028384446440000
• 81821323800 cubed (81821323800³) is 547771591584703183050997272000000
• The square root of 81821323800 is 286044.2689515033
• The cube root of 81821323800 is 4341.3236811307

Scales and comparisons

• 81,821,323,800 seconds is equal to 2,601 years, 34 weeks, 4 days, 1 hour, 30 minutes.
• To count from 1 to 81,821,323,800 would take you about five thousand, two hundred 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 81821323800 cubic inches would be around 361.8 feet tall.

Recreational maths with 81821323800

• 81821323800 backwards is 00832312818
• 81821323800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81821323800's digits is 36
• More coming soon!