40728380

Names of 40728380

• Cardinal: 40728380 can be written as Forty million, seven hundred twenty-eight thousand, three hundred eighty.

Scientific notation

• Scientific notation: 4.072838 × 10⁷

Factors of 40728380

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 577

Divisors of 40728380

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 10 11 14 20 22 28 35 44 53 55 70 77 106 110 140 154 212 220 265 308 371 385 499 530 583 742 770 998 1060 1166 1484 1540 1855 1996 2332 2495 2915 3493 3710 4081 4990 5489 5830 6986 7420 8162 9980 10978 11660 13972 16324 17465 20405 21956 26447 27445 34930 38423 40810 52894 54890 69860 76846 81620 105788 109780 132235 153692 185129 192115 264470 290917 370258 384230 528940 581834 740516 768460 925645 1163668 1454585 1851290 2036419 2909170 3702580 4072838 5818340 8145676 10182095 20364190 40728380
• Sum of all divisors σ(n): 108864000
• Sum of proper divisors (its aliquot sum) s(n): 68135620
• 40728380 is an abundant number, because the sum of its proper divisors (68135620) is greater than itself. Its abundance is 27407240

Bases of 40728380

• Binary: 10011011010111011100111100₂
• Hexadecimal: 0x26D773C
• Base-36: O8Y7W

Squares and roots of 40728380

• 40728380 squared (40728380²) is 1658800937424400
• 40728380 cubed (40728380³) is 67560274923777184472000
• The square root of 40728380 is 6381.8790336389
• The cube root of 40728380 is 344.0585689891

Scales and comparisons

• 40,728,380 seconds is equal to 1 year, 15 weeks, 2 days, 9 hours, 26 minutes, 20 seconds.
• To count from 1 to 40,728,380 would take you about forty-nine weeks!

  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 40728380 cubic inches would be around 28.7 feet tall.

Recreational maths with 40728380

• 40728380 backwards is 08382704
• The number of decimal digits it has is: 8
• The sum of 40728380's digits is 32
• More coming soon!