1428321920

Names of 1428321920

• Cardinal: 1428321920 can be written as One billion, four hundred twenty-eight million, three hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.42832192 × 10⁹

Factors of 1428321920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1954

Divisors of 1428321920

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 16 20 29 32 40 41 58 64 80 82 116 128 145 160 164 205 232 290 320 328 410 464 580 640 656 820 928 1160 1189 1312 1640 1856 1877 2320 2378 2624 3280 3712 3754 4640 4756 5248 5945 6560 7508 9280 9385 9512 11890 13120 15016 18560 18770 19024 23780 26240 30032 37540 38048 47560 54433 60064 75080 76096 76957 95120 108866 120128 150160 152192 153914 190240 217732 240256 272165 300320 307828 380480 384785 435464 544330 600640 615656 760960 769570 870928 1088660 1201280 1231312 1539140 1741856 2177320 2231753 2462624 3078280 3483712 4354640 4463506 4925248 6156560 6967424 8709280 8927012 9850496 11158765 12313120 17418560 17854024 22317530 24626240 34837120 35708048 44635060 49252480 71416096 89270120 142832192 178540240 285664384 357080480 714160960 1428321920
• Sum of all divisors σ(n): 3620408400
• Sum of proper divisors (its aliquot sum) s(n): 2192086480
• 1428321920 is an abundant number, because the sum of its proper divisors (2192086480) is greater than itself. Its abundance is 763764560

Bases of 1428321920

• Binary: 1010101001000100111011010000000₂
• Hexadecimal: 0x55227680
• Base-36: NMDW8W

Squares and roots of 1428321920

• 1428321920 squared (1428321920²) is 2040103507152486400
• 1428321920 cubed (1428321920³) is 2913924558334773107621888000
• The square root of 1428321920 is 37793.1464686393
• The cube root of 1428321920 is 1126.1823079759

Scales and comparisons

• 1,428,321,920 seconds is equal to 45 years, 21 weeks, 4 days, 12 hours, 5 minutes, 20 seconds.
• To count from 1 to 1,428,321,920 would take you about ninety 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 1428321920 cubic inches would be around 93.8 feet tall.

Recreational maths with 1428321920

• 1428321920 backwards is 0291238241
• 1428321920 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1428321920's digits is 32
• More coming soon!