18428621778

Names of 18428621778

• Cardinal: 18428621778 can be written as Eighteen billion, four hundred twenty-eight million, six hundred twenty-one thousand, seven hundred seventy-eight.

Scientific notation

• Scientific notation: 1.8428621778 × 10¹⁰

Factors of 18428621778

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2131

Divisors of 18428621778

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 7 9 14 18 19 21 38 42 49 57 63 98 114 126 133 147 171 266 294 342 399 441 798 882 931 997 1103 1197 1862 1994 2206 2394 2793 2991 3309 5586 5982 6618 6979 7721 8379 8973 9927 13958 15442 16758 17946 18943 19854 20937 20957 23163 37886 41874 41914 46326 48853 54047 56829 62811 62871 69489 97706 108094 113658 125622 125742 132601 138978 146559 146699 162141 170487 188613 265202 293118 293398 324282 340974 377226 397803 439677 440097 486423 795606 879354 880194 928207 972846 1026893 1099691 1193409 1320291 1856414 2053786 2199382 2386818 2640582 2784621 3080679 3299073 5569242 6161358 6598146 7697837 8353863 9242037 9897219 15395674 16707726 18484074 19794438 20894129 23093511 41788258 46187022 53884859 62682387 69280533 107769718 125364774 138561066 146258903 161654577 188047161 292517806 323309154 376094322 438776709 484963731 877553418 969927462 1023812321 1316330127 2047624642 2632660254 3071436963 6142873926 9214310889 18428621778
• Sum of all divisors σ(n): 48985672320
• Sum of proper divisors (its aliquot sum) s(n): 30557050542
• 18428621778 is an abundant number, because the sum of its proper divisors (30557050542) is greater than itself. Its abundance is 12128428764

Bases of 18428621778

• Binary: 10001001010011011100111001111010010₂
• Hexadecimal: 0x44A6E73D2
• Base-36: 8GRXBKI

Squares and roots of 18428621778

• 18428621778 squared (18428621778²) is 339614100636575881284
• 18428621778 cubed (18428621778³) is 6258619811107085949179865002952
• The square root of 18428621778 is 135752.0599401719
• The cube root of 18428621778 is 2641.3804084209

Scales and comparisons

• 18,428,621,778 seconds is equal to 585 years, 50 weeks, 4 days, 5 hours, 36 minutes, 18 seconds.
• To count from 1 to 18,428,621,778 would take you about one thousand, one hundred seventy-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 18428621778 cubic inches would be around 220.1 feet tall.

Recreational maths with 18428621778

• 18428621778 backwards is 87712682481
• The number of decimal digits it has is: 11
• The sum of 18428621778's digits is 54
• More coming soon!