81614142990

Names of 81614142990

• Cardinal: 81614142990 can be written as Eighty-one billion, six hundred fourteen million, one hundred forty-two thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 8.161414299 × 10¹⁰

Factors of 81614142990

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5820

Divisors of 81614142990

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 19 30 31 38 45 57 62 90 93 95 114 155 171 186 190 279 281 285 310 342 465 558 562 570 589 843 855 930 1178 1395 1405 1686 1710 1767 2529 2790 2810 2945 3534 4215 5058 5301 5339 5479 5890 8430 8711 8835 10602 10678 10958 12645 16017 16437 17422 17670 25290 26133 26505 26695 27395 32034 32874 43555 48051 49311 52266 53010 53390 54790 78399 80085 82185 87110 96102 98622 104101 130665 156798 160170 164370 165509 169849 208202 240255 246555 261330 312303 331018 339698 391995 480510 493110 496527 509547 520505 624606 783990 827545 849245 936909 993054 1019094 1041010 1489581 1528641 1539599 1561515 1655090 1698490 1873818 2482635 2547735 2979162 3057282 3079198 3123030 3227131 4618797 4684545 4965270 5095470 6454262 7447905 7643205 7697995 9237594 9369090 9681393 13856391 14895810 15286410 15395990 16135655 19362786 23093985 27712782 29044179 29252381 32271310 46187970 47727569 48406965 58088358 58504762 69281955 87757143 95455138 96813930 138563910 143182707 145220895 146261905 175514286 238637845 263271429 286365414 290441790 292523810 429548121 438785715 477275690 526542858 715913535 859096242 877571430 906823811 1316357145 1431827070 1813647622 2147740605 2632714290 2720471433 4295481210 4534119055 5440942866 8161414299 9068238110 13602357165 16322828598 27204714330 40807071495 81614142990
• Sum of all divisors σ(n): 231433113600
• Sum of proper divisors (its aliquot sum) s(n): 149818970610
• 81614142990 is an abundant number, because the sum of its proper divisors (149818970610) is greater than itself. Its abundance is 68204827620

Bases of 81614142990

• Binary: 1001100000000100101001111111000001110₂
• Hexadecimal: 0x130094FE0E
• Base-36: 11HQYBRI

Squares and roots of 81614142990

• 81614142990 squared (81614142990²) is 6660868335992166140100
• 81614142990 cubed (81614142990³) is 543621060811228010877957772899000
• The square root of 81614142990 is 285681.8912531909
• The cube root of 81614142990 is 4337.6563437959

Scales and comparisons

• 81,614,142,990 seconds is equal to 2,595 years, 4 weeks, 3 hours, 16 minutes, 30 seconds.
• To count from 1 to 81,614,142,990 would take you about five thousand, one hundred ninety 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 81614142990 cubic inches would be around 361.5 feet tall.

Recreational maths with 81614142990

• 81614142990 backwards is 09924141618
• 81614142990 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81614142990's digits is 45
• More coming soon!