78138493400

Names of 78138493400

• Cardinal: 78138493400 can be written as Seventy-eight billion, one hundred thirty-eight million, four hundred ninety-three thousand, four hundred.

Scientific notation

• Scientific notation: 7.81384934 × 10¹⁰

Factors of 78138493400

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 17481

Divisors of 78138493400

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 11 20 22 23 25 40 44 46 50 55 88 89 92 100 110 115 178 184 200 220 230 253 275 356 440 445 460 506 550 575 712 890 920 979 1012 1100 1150 1265 1780 1958 2024 2047 2200 2225 2300 2530 3560 3916 4094 4450 4600 4895 5060 6325 7832 8188 8900 9790 10120 10235 12650 16376 17351 17800 19580 20470 22517 24475 25300 34702 39160 40940 45034 48950 50600 51175 69404 81880 86755 90068 97900 102350 112585 138808 173510 180136 190861 195800 204700 225170 347020 381722 399073 409400 433775 450340 562925 694040 763444 798146 867550 900680 954305 1125850 1526888 1544239 1596292 1735100 1908610 1995365 2251700 3088478 3192584 3470200 3817220 3990730 4389803 4503400 4771525 6176956 7634440 7721195 7981460 8779606 9543050 9976825 12353912 15442390 15962920 16986629 17559212 19086100 19953650 21949015 30884780 33973258 35118424 35517497 38172200 38605975 39907300 43898030 61769560 67946516 71034994 77211950 79814600 84933145 87796060 109745075 135893032 142069988 154423900 169866290 175592120 177587485 219490150 284139976 308847800 339732580 355174970 390692467 424665725 438980300 679465160 710349940 781384934 849331450 877960600 887937425 1420699880 1562769868 1698662900 1775874850 1953462335 3125539736 3397325800 3551749700 3906924670 7103499400 7813849340 9767311675 15627698680 19534623350 39069246700 78138493400
• Sum of all divisors σ(n): 209140185600
• Sum of proper divisors (its aliquot sum) s(n): 131001692200
• 78138493400 is an abundant number, because the sum of its proper divisors (131001692200) is greater than itself. Its abundance is 52863198800

Bases of 78138493400

• Binary: 1001000110001011010101100100111011000₂
• Hexadecimal: 0x12316AC9D8
• Base-36: ZW9N3DK

Squares and roots of 78138493400

• 78138493400 squared (78138493400²) is 6105624150821843560000
• 78138493400 cubed (78138493400³) is 477084272411873227588892504000000
• The square root of 78138493400 is 279532.6338730419
• The cube root of 78138493400 is 4275.1859686777

Scales and comparisons

• 78,138,493,400 seconds is equal to 2,484 years, 29 weeks, 1 day, 17 hours, 3 minutes, 20 seconds.
• To count from 1 to 78,138,493,400 would take you about four thousand, nine hundred sixty-nine 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 78138493400 cubic inches would be around 356.3 feet tall.

Recreational maths with 78138493400

• 78138493400 backwards is 00439483187
• The number of decimal digits it has is: 11
• The sum of 78138493400's digits is 47
• More coming soon!