18271728840

Names of 18271728840

• Cardinal: 18271728840 can be written as Eighteen billion, two hundred seventy-one million, seven hundred twenty-eight thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.827172884 × 10¹⁰

Factors of 18271728840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 549978

Divisors of 18271728840

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 277 554 831 1108 1385 1662 2216 2770 3324 4155 5540 6648 8310 11080 16620 33240 549691 1099382 1649073 2198764 2748455 3298146 4397528 5496910 6596292 8245365 10993820 13192584 16490730 21987640 32981460 65962920 152264407 304528814 456793221 609057628 761322035 913586442 1218115256 1522644070 1827172884 2283966105 3045288140 3654345768 4567932210 6090576280 9135864420 18271728840
• Sum of all divisors σ(n): 55013175360
• Sum of proper divisors (its aliquot sum) s(n): 36741446520
• 18271728840 is an abundant number, because the sum of its proper divisors (36741446520) is greater than itself. Its abundance is 18469717680

Bases of 18271728840

• Binary: 10001000001000101000111010011001000₂
• Hexadecimal: 0x4411474C8
• Base-36: 8E6IK7C

Squares and roots of 18271728840

• 18271728840 squared (18271728840²) is 333856074802487745600
• 18271728840 cubed (18271728840³) is 6100127670377812645026103104000
• The square root of 18271728840 is 135172.9589821869
• The cube root of 18271728840 is 2633.8631964089

Scales and comparisons

• 18,271,728,840 seconds is equal to 580 years, 51 weeks, 1 day, 8 hours, 14 minutes.
• To count from 1 to 18,271,728,840 would take you about one thousand, one hundred sixty-one 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 18271728840 cubic inches would be around 219.5 feet tall.

Recreational maths with 18271728840

• 18271728840 backwards is 04882717281
• The number of decimal digits it has is: 11
• The sum of 18271728840's digits is 48
• More coming soon!