68431440

Names of 68431440

• Cardinal: 68431440 can be written as Sixty-eight million, four hundred thirty-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 6.843144 × 10⁷

Factors of 68431440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 51

Divisors of 68431440

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 11 12 14 15 16 20 21 22 23 24 28 30 33 35 40 42 44 46 48 49 55 56 60 66 69 70 77 80 84 88 92 98 105 110 112 115 120 132 138 140 147 154 161 165 168 176 184 196 210 220 230 231 240 245 253 264 276 280 294 308 322 330 336 345 368 385 392 420 440 460 462 483 490 506 528 529 539 552 560 588 616 644 660 690 735 759 770 784 805 840 880 920 924 966 980 1012 1058 1078 1104 1127 1155 1176 1232 1265 1288 1320 1380 1470 1518 1540 1587 1610 1617 1680 1771 1840 1848 1932 1960 2024 2116 2156 2254 2310 2352 2415 2530 2576 2640 2645 2695 2760 2940 3036 3080 3174 3220 3234 3381 3542 3696 3703 3795 3864 3920 4048 4232 4312 4508 4620 4830 5060 5290 5313 5390 5520 5635 5819 5880 6072 6160 6348 6440 6468 6762 7084 7406 7590 7728 7935 8085 8464 8624 8855 9016 9240 9660 10120 10580 10626 10780 11109 11270 11638 11760 12144 12397 12696 12880 12936 13524 14168 14812 15180 15870 16170 16905 17457 17710 18032 18480 18515 19320 20240 21160 21252 21560 22218 22540 23276 24794 25392 25872 25921 26565 27048 28336 29095 29624 30360 31740 32340 33810 34914 35420 37030 37191 38640 40733 42320 42504 43120 44436 45080 46552 49588 51842 53130 54096 55545 58190 59248 60720 61985 63480 64680 67620 69828 70840 74060 74382 77763 81466 85008 87285 88872 90160 93104 99176 103684 106260 111090 116380 122199 123970 126960 129360 129605 135240 139656 141680 148120 148764 155526 162932 174570 177744 185955 198352 203665 207368 212520 222180 232760 244398 247940 259210 270480 279312 285131 296240 297528 311052 325864 349140 371910 388815 407330 414736 425040 444360 465520 488796 495880 518420 570262 595056 610995 622104 651728 698280 743820 777630 814660 855393 888720 977592 991760 1036840 1140524 1221990 1244208 1396560 1425655 1487640 1555260 1629320 1710786 1955184 2073680 2281048 2443980 2851310 2975280 3110520 3258640 3421572 4276965 4562096 4887960 5702620 6221040 6843144 8553930 9775920 11405240 13686288 17107860 22810480 34215720 68431440
• Sum of all divisors σ(n): 281419488
• Sum of proper divisors (its aliquot sum) s(n): 212988048
• 68431440 is an abundant number, because the sum of its proper divisors (212988048) is greater than itself. Its abundance is 144556608

Bases of 68431440

• Binary: 100000101000010111001010000₂
• Hexadecimal: 0x4142E50
• Base-36: 14QQ1C

Squares and roots of 68431440

• 68431440 squared (68431440²) is 4682861980473600
• 68431440 cubed (68431440³) is 320454988645060329984000
• The square root of 68431440 is 8272.3297806603
• The cube root of 68431440 is 409.0269209907

Scales and comparisons

• 68,431,440 seconds is equal to 2 years, 9 weeks, 1 day, 44 minutes.
• To count from 1 to 68,431,440 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 68431440 cubic inches would be around 34.1 feet tall.

Recreational maths with 68431440

• 68431440 backwards is 04413486
• 68431440 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 68431440's digits is 30
• More coming soon!