68474640

Names of 68474640

• Cardinal: 68474640 can be written as Sixty-eight million, four hundred seventy-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 6.847464 × 10⁷

Factors of 68474640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1331

Divisors of 68474640

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 17 20 24 26 30 34 39 40 48 51 52 60 65 68 78 80 85 102 104 120 130 136 156 170 195 204 208 221 240 255 260 272 312 340 390 408 442 510 520 624 663 680 780 816 884 1020 1040 1105 1291 1326 1360 1560 1768 2040 2210 2582 2652 3120 3315 3536 3873 4080 4420 5164 5304 6455 6630 7746 8840 10328 10608 12910 13260 15492 16783 17680 19365 20656 21947 25820 26520 30984 33566 38730 43894 50349 51640 53040 61968 65841 67132 77460 83915 87788 100698 103280 109735 131682 134264 154920 167830 175576 201396 219470 251745 263364 268528 285311 309840 329205 335660 351152 402792 438940 503490 526728 570622 658410 671320 805584 855933 877880 1006980 1053456 1141244 1316820 1342640 1426555 1711866 1755760 2013960 2282488 2633640 2853110 3423732 4027920 4279665 4564976 5267280 5706220 6847464 8559330 11412440 13694928 17118660 22824880 34237320 68474640
• Sum of all divisors σ(n): 242234496
• Sum of proper divisors (its aliquot sum) s(n): 173759856
• 68474640 is an abundant number, because the sum of its proper divisors (173759856) is greater than itself. Its abundance is 105285216

Bases of 68474640

• Binary: 100000101001101011100010000₂
• Hexadecimal: 0x414D710
• Base-36: 14RNDC

Squares and roots of 68474640

• 68474640 squared (68474640²) is 4688776323129600
• 68474640 cubed (68474640³) is 321062270766823033344000
• The square root of 68474640 is 8274.9404831695
• The cube root of 68474640 is 409.1129742531

Scales and comparisons

• 68,474,640 seconds is equal to 2 years, 9 weeks, 1 day, 12 hours, 44 minutes.
• To count from 1 to 68,474,640 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 68474640 cubic inches would be around 34.1 feet tall.

Recreational maths with 68474640

• 68474640 backwards is 04647486
• 68474640 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 68474640's digits is 39
• More coming soon!