428991420

Names of 428991420

• Cardinal: 428991420 can be written as Four hundred twenty-eight million, nine hundred ninety-one thousand, four hundred twenty.

Scientific notation

• Scientific notation: 4.2899142 × 10⁸

Factors of 428991420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 50033

Divisors of 428991420

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 13 15 20 22 26 30 33 39 44 52 55 60 65 66 78 110 130 132 143 156 165 195 220 260 286 330 390 429 572 660 715 780 858 1430 1716 2145 2860 4290 8580 49999 99998 149997 199996 249995 299994 499990 549989 599988 649987 749985 999980 1099978 1299974 1499970 1649967 1949961 2199956 2599948 2749945 2999940 3249935 3299934 3899922 5499890 6499870 6599868 7149857 7799844 8249835 9749805 10999780 12999740 14299714 16499670 19499610 21449571 28599428 32999340 35749285 38999220 42899142 71498570 85798284 107247855 142997140 214495710 428991420
• Sum of all divisors σ(n): 1411200000
• Sum of proper divisors (its aliquot sum) s(n): 982208580
• 428991420 is an abundant number, because the sum of its proper divisors (982208580) is greater than itself. Its abundance is 553217160

Bases of 428991420

• Binary: 11001100100011110001110111100₂
• Hexadecimal: 0x1991E3BC
• Base-36: 73ERWC

Squares and roots of 428991420

• 428991420 squared (428991420²) is 184033638433616400
• 428991420 cubed (428991420³) is 78948851879403675171288000
• The square root of 428991420 is 20712.1080530205
• The cube root of 428991420 is 754.1936451927

Scales and comparisons

• 428,991,420 seconds is equal to 13 years, 33 weeks, 2 days, 4 hours, 17 minutes.
• To count from 1 to 428,991,420 would take you about twenty 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 428991420 cubic inches would be around 62.8 feet tall.

Recreational maths with 428991420

• 428991420 backwards is 024199824
• 428991420 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 428991420's digits is 39
• More coming soon!