38138990

Names of 38138990

• Cardinal: 38138990 can be written as Thirty-eight million, one hundred thirty-eight thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 3.813899 × 10⁷

Factors of 38138990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 7292

Divisors of 38138990

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 5 10 17 31 34 62 85 155 170 310 527 1054 2635 5270 7237 14474 36185 72370 123029 224347 246058 448694 615145 1121735 1230290 2243470 3813899 7627798 19069495 38138990
• Sum of all divisors σ(n): 75043584
• Sum of proper divisors (its aliquot sum) s(n): 36904594
• 38138990 is a deficient number, because the sum of its proper divisors (36904594) is less than itself. Its deficiency is 1234396

Bases of 38138990

• Binary: 10010001011111010001101110₂
• Hexadecimal: 0x245F46E
• Base-36: MPG8E

Squares and roots of 38138990

• 38138990 squared (38138990²) is 1454582558220100
• 38138990 cubed (38138990³) is 55476309642130811699000
• The square root of 38138990 is 6175.6772907917
• The cube root of 38138990 is 336.6069375245

Scales and comparisons

• 38,138,990 seconds is equal to 1 year, 11 weeks, 10 hours, 9 minutes, 50 seconds.
• To count from 1 to 38,138,990 would take you about forty-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 38138990 cubic inches would be around 28.1 feet tall.

Recreational maths with 38138990

• 38138990 backwards is 09983183
• The number of decimal digits it has is: 8
• The sum of 38138990's digits is 41
• More coming soon!