40138942872

Names of 40138942872

• Cardinal: 40138942872 can be written as Forty billion, one hundred thirty-eight million, nine hundred forty-two thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 4.0138942872 × 10¹⁰

Factors of 40138942872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 350508

Divisors of 40138942872

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 683 1366 2049 2732 4098 4781 5464 8196 9562 14343 16392 19124 28686 38248 57372 114744 349813 699626 1049439 1399252 2098878 2448691 2798504 4197756 4897382 7346073 8395512 9794764 14692146 19589528 29384292 58768584 238922279 477844558 716766837 955689116 1433533674 1672455953 1911378232 2867067348 3344911906 5017367859 5734134696 6689823812 10034735718 13379647624 20069471436 40138942872
• Sum of all divisors σ(n): 114850932480
• Sum of proper divisors (its aliquot sum) s(n): 74711989608
• 40138942872 is an abundant number, because the sum of its proper divisors (74711989608) is greater than itself. Its abundance is 34573046736

Bases of 40138942872

• Binary: 100101011000011101111010100110011000₂
• Hexadecimal: 0x95877A998
• Base-36: IFTOUJC

Squares and roots of 40138942872

• 40138942872 squared (40138942872²) is 1611134734881679608384
• 40138942872 cubed (40138942872³) is 64669245082510603480332708238848
• The square root of 40138942872 is 200347.0560602277
• The cube root of 40138942872 is 3423.9071334305

Scales and comparisons

• 40,138,942,872 seconds is equal to 1,276 years, 15 weeks, 2 days, 2 hours, 21 minutes, 12 seconds.
• To count from 1 to 40,138,942,872 would take you about two thousand, five hundred fifty-two 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 40138942872 cubic inches would be around 285.3 feet tall.

Recreational maths with 40138942872

• 40138942872 backwards is 27824983104
• The number of decimal digits it has is: 11
• The sum of 40138942872's digits is 48
• More coming soon!