642825420

Names of 642825420

• Cardinal: 642825420 can be written as Six hundred forty-two million, eight hundred twenty-five thousand, four hundred twenty.

Scientific notation

• Scientific notation: 6.4282542 × 10⁸

Factors of 642825420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 17097

Divisors of 642825420

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 17 20 30 34 37 51 60 68 74 85 102 111 148 170 185 204 222 255 340 370 444 510 555 629 740 1020 1110 1258 1887 2220 2516 3145 3774 6290 7548 9435 12580 17033 18870 34066 37740 51099 68132 85165 102198 170330 204396 255495 289561 340660 510990 579122 630221 868683 1021980 1158244 1260442 1447805 1737366 1890663 2520884 2895610 3151105 3474732 3781326 4343415 5791220 6302210 7562652 8686830 9453315 10713757 12604420 17373660 18906630 21427514 32141271 37813260 42855028 53568785 64282542 107137570 128565084 160706355 214275140 321412710 642825420
• Sum of all divisors σ(n): 1957411008
• Sum of proper divisors (its aliquot sum) s(n): 1314585588
• 642825420 is an abundant number, because the sum of its proper divisors (1314585588) is greater than itself. Its abundance is 671760168

Bases of 642825420

• Binary: 100110010100001011110011001100₂
• Hexadecimal: 0x2650BCCC
• Base-36: AMPZ9O

Squares and roots of 642825420

• 642825420 squared (642825420²) is 413224520598176400
• 642825420 cubed (642825420³) is 265631226007821395564088000
• The square root of 642825420 is 25354.0020509583
• The cube root of 642825420 is 863.0401774781

Scales and comparisons

• 642,825,420 seconds is equal to 20 years, 22 weeks, 6 days, 2 hours, 37 minutes.
• To count from 1 to 642,825,420 would take you about thirty 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 642825420 cubic inches would be around 71.9 feet tall.

Recreational maths with 642825420

• 642825420 backwards is 024528246
• The number of decimal digits it has is: 9
• The sum of 642825420's digits is 33
• More coming soon!