68398400

Names of 68398400

• Cardinal: 68398400 can be written as Sixty-eight million, three hundred ninety-eight thousand, four hundred.

Scientific notation

• Scientific notation: 6.83984 × 10⁷

Factors of 68398400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 242

Divisors of 68398400

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 25 28 31 32 35 40 50 56 62 64 70 80 100 112 124 140 155 160 175 197 200 217 224 248 280 310 320 350 394 400 434 448 496 560 620 700 775 788 800 868 985 992 1085 1120 1240 1379 1400 1550 1576 1600 1736 1970 1984 2170 2240 2480 2758 2800 3100 3152 3472 3940 4340 4925 4960 5425 5516 5600 6107 6200 6304 6895 6944 7880 8680 9850 9920 10850 11032 11200 12214 12400 12608 13790 13888 15760 17360 19700 21700 22064 24428 24800 27580 30535 31520 34475 34720 39400 42749 43400 44128 48856 49600 55160 61070 63040 68950 69440 78800 85498 86800 88256 97712 110320 122140 137900 152675 157600 170996 173600 195424 213745 220640 244280 275800 305350 315200 341992 347200 390848 427490 441280 488560 551600 610700 683984 854980 977120 1068725 1103200 1221400 1367968 1709960 1954240 2137450 2206400 2442800 2735936 3419920 4274900 4885600 6839840 8549800 9771200 13679680 17099600 34199200 68398400
• Sum of all divisors σ(n): 199558656
• Sum of proper divisors (its aliquot sum) s(n): 131160256
• 68398400 is an abundant number, because the sum of its proper divisors (131160256) is greater than itself. Its abundance is 62761856

Bases of 68398400

• Binary: 100000100111010110101000000₂
• Hexadecimal: 0x413AD40
• Base-36: 14Q0JK

Squares and roots of 68398400

• 68398400 squared (68398400²) is 4678341122560000
• 68398400 cubed (68398400³) is 319991047437307904000000
• The square root of 68398400 is 8270.3325205217
• The cube root of 68398400 is 408.9610817361

Scales and comparisons

• 68,398,400 seconds is equal to 2 years, 9 weeks, 15 hours, 33 minutes, 20 seconds.
• To count from 1 to 68,398,400 would take you about three 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 68398400 cubic inches would be around 34.1 feet tall.

Recreational maths with 68398400

• 68398400 backwards is 00489386
• The number of decimal digits it has is: 8
• The sum of 68398400's digits is 38
• More coming soon!