400066940

Names of 400066940

• Cardinal: 400066940 can be written as Four hundred million, sixty-six thousand, nine hundred forty.

Scientific notation

• Scientific notation: 4.0006694 × 10⁸

Factors of 400066940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 521

Divisors of 400066940

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 35 37 52 65 70 74 91 130 140 148 169 182 185 259 260 338 364 370 455 457 481 518 676 740 845 910 914 962 1036 1183 1295 1690 1820 1828 1924 2285 2366 2405 2590 3199 3367 3380 4570 4732 4810 5180 5915 5941 6253 6398 6734 9140 9620 11830 11882 12506 12796 13468 15995 16835 16909 23660 23764 25012 29705 31265 31990 33670 33818 41587 43771 59410 62530 63980 67340 67636 77233 83174 84545 87542 118363 118820 125060 154466 166348 169090 175084 207935 218855 219817 236726 308932 338180 386165 415870 437710 439634 473452 540631 591815 772330 831740 875420 879268 1081262 1099085 1183630 1538719 1544660 2162524 2198170 2367260 2703155 2857621 3077438 4396340 5406310 5715242 6154876 7693595 10812620 11430484 14288105 15387190 20003347 28576210 30774380 40006694 57152420 80013388 100016735 200033470 400066940
• Sum of all divisors σ(n): 1070137152
• Sum of proper divisors (its aliquot sum) s(n): 670070212
• 400066940 is an abundant number, because the sum of its proper divisors (670070212) is greater than itself. Its abundance is 270003272

Bases of 400066940

• Binary: 10111110110001000100101111100₂
• Hexadecimal: 0x17D8897C
• Base-36: 6M6TMK

Squares and roots of 400066940

• 400066940 squared (400066940²) is 160053556480963600
• 400066940 cubed (400066940³) is 64032136577456275703384000
• The square root of 400066940 is 20001.6734299909
• The cube root of 400066940 is 736.8473989469

Scales and comparisons

• 400,066,940 seconds is equal to 12 years, 37 weeks, 3 days, 9 hours, 42 minutes, 20 seconds.
• To count from 1 to 400,066,940 would take you about nineteen 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 400066940 cubic inches would be around 61.4 feet tall.

Recreational maths with 400066940

• 400066940 backwards is 049660004
• The number of decimal digits it has is: 9
• The sum of 400066940's digits is 29
• More coming soon!