40728912

Names of 40728912

• Cardinal: 40728912 can be written as Forty million, seven hundred twenty-eight thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 4.0728912 × 10⁷

Factors of 40728912

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2874

Divisors of 40728912

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 43 48 56 84 86 112 129 168 172 258 301 336 344 516 602 688 903 1032 1204 1806 2064 2408 2819 3612 4816 5638 7224 8457 11276 14448 16914 19733 22552 33828 39466 45104 59199 67656 78932 118398 121217 135312 157864 236796 242434 315728 363651 473592 484868 727302 848519 947184 969736 1454604 1697038 1939472 2545557 2909208 3394076 5091114 5818416 6788152 10182228 13576304 20364456 40728912
• Sum of all divisors σ(n): 123087360
• Sum of proper divisors (its aliquot sum) s(n): 82358448
• 40728912 is an abundant number, because the sum of its proper divisors (82358448) is greater than itself. Its abundance is 41629536

Bases of 40728912

• Binary: 10011011010111100101010000₂
• Hexadecimal: 0x26D7950
• Base-36: O8YMO

Squares and roots of 40728912

• 40728912 squared (40728912²) is 1658844272703744
• 40728912 cubed (40728912³) is 67562922404654791446528
• The square root of 40728912 is 6381.9207140171
• The cube root of 40728912 is 344.0600670303

Scales and comparisons

• 40,728,912 seconds is equal to 1 year, 15 weeks, 2 days, 9 hours, 35 minutes, 12 seconds.
• To count from 1 to 40,728,912 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 40728912 cubic inches would be around 28.7 feet tall.

Recreational maths with 40728912

• 40728912 backwards is 21982704
• The number of decimal digits it has is: 8
• The sum of 40728912's digits is 33
• More coming soon!