30138456

Names of 30138456

• Cardinal: 30138456 can be written as Thirty million, one hundred thirty-eight thousand, four hundred fifty-six.

Scientific notation

• Scientific notation: 3.0138456 × 10⁷

Factors of 30138456

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 11231

Divisors of 30138456

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 4 6 8 12 24 113 226 339 452 678 904 1356 2712 11113 22226 33339 44452 66678 88904 133356 266712 1255769 2511538 3767307 5023076 7534614 10046152 15069228 30138456
• Sum of all divisors σ(n): 76019760
• Sum of proper divisors (its aliquot sum) s(n): 45881304
• 30138456 is an abundant number, because the sum of its proper divisors (45881304) is greater than itself. Its abundance is 15742848

Bases of 30138456

• Binary: 1110010111110000001011000₂
• Hexadecimal: 0x1CBE058
• Base-36: HXYZC

Squares and roots of 30138456

• 30138456 squared (30138456²) is 908326530063936
• 30138456 cubed (30138456³) is 27375559159964612322816
• The square root of 30138456 is 5489.8502711823
• The cube root of 30138456 is 311.2005337431

Scales and comparisons

• 30,138,456 seconds is equal to 49 weeks, 5 days, 19 hours, 47 minutes, 36 seconds.
• To count from 1 to 30,138,456 would take you about twenty-two 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 30138456 cubic inches would be around 25.9 feet tall.

Recreational maths with 30138456

• 30138456 backwards is 65483103
• The number of decimal digits it has is: 8
• The sum of 30138456's digits is 30
• More coming soon!