872138193920

Names of 872138193920

• Cardinal: 872138193920 can be written as Eight hundred seventy-two billion, one hundred thirty-eight million, one hundred ninety-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 8.7213819392 × 10¹¹

Factors of 872138193920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 24334227

Divisors of 872138193920

• Number of divisors d(n): 88
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 512 560 640 896 1024 1120 1280 1792 2240 2560 3584 4480 5120 7168 8960 17920 35840 24334213 48668426 97336852 121671065 170339491 194673704 243342130 340678982 389347408 486684260 681357964 778694816 851697455 973368520 1362715928 1557389632 1703394910 1946737040 2725431856 3114779264 3406789820 3893474080 5450863712 6229558528 6813579640 7786948160 10901727424 12459117056 13627159280 15573896320 21803454848 24918234112 27254318560 31147792640 43606909696 54508637120 62295585280 87213819392 109017274240 124591170560 174427638784 218034548480 436069096960 872138193920
• Sum of all divisors σ(n): 2390982530784
• Sum of proper divisors (its aliquot sum) s(n): 1518844336864
• 872138193920 is an abundant number, because the sum of its proper divisors (1518844336864) is greater than itself. Its abundance is 646706142944

Bases of 872138193920

• Binary: 1100101100001111011111001011110000000000₂
• Hexadecimal: 0xCB0F7CBC00
• Base-36: B4NKK9A8

Squares and roots of 872138193920

• 872138193920 squared (872138193920²) is 760625029294039524966400
• 872138193920 cubed (872138193920³) is 663370139298850723925290844684288000
• The square root of 872138193920 is 933883.3941772389
• The cube root of 872138193920 is 9554.2170238525

Scales and comparisons

• 872,138,193,920 seconds is equal to 27,731 years, 15 weeks, 3 days, 1 hour, 25 minutes, 20 seconds.
• To count from 1 to 872,138,193,920 would take you about fifty-five thousand, four hundred sixty-two 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 872138193920 cubic inches would be around 796.2 feet tall.

Recreational maths with 872138193920

• 872138193920 backwards is 029391831278
• The number of decimal digits it has is: 12
• The sum of 872138193920's digits is 53
• More coming soon!