39428420

Names of 39428420

• Cardinal: 39428420 can be written as Thirty-nine million, four hundred twenty-eight thousand, four hundred twenty.

Scientific notation

• Scientific notation: 3.942842 × 10⁷

Factors of 39428420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 196

Divisors of 39428420

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 10 19 20 38 43 76 86 95 127 172 190 215 254 361 380 430 508 635 722 817 860 1270 1444 1634 1805 2413 2540 3268 3610 4085 4826 5461 7220 8170 9652 10922 12065 15523 16340 21844 24130 27305 31046 45847 48260 54610 62092 77615 91694 103759 109220 155230 183388 207518 229235 310460 415036 458470 518795 916940 1037590 1971421 2075180 3942842 7885684 9857105 19714210 39428420
• Sum of all divisors σ(n): 90123264
• Sum of proper divisors (its aliquot sum) s(n): 50694844
• 39428420 is an abundant number, because the sum of its proper divisors (50694844) is greater than itself. Its abundance is 11266424

Bases of 39428420

• Binary: 10010110011010000101000100₂
• Hexadecimal: 0x259A144
• Base-36: NH35W

Squares and roots of 39428420

• 39428420 squared (39428420²) is 1554600303696400
• 39428420 cubed (39428420³) is 61295433706269211688000
• The square root of 39428420 is 6279.2053637383
• The cube root of 39428420 is 340.3583879561

Scales and comparisons

• 39,428,420 seconds is equal to 1 year, 13 weeks, 1 day, 8 hours, 20 minutes, 20 seconds.
• To count from 1 to 39,428,420 would take you about forty-five 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 39428420 cubic inches would be around 28.4 feet tall.

Recreational maths with 39428420

• 39428420 backwards is 02482493
• The number of decimal digits it has is: 8
• The sum of 39428420's digits is 32
• More coming soon!