21356000

Names of 21356000

• Cardinal: 21356000 can be written as Twenty-one million, three hundred fifty-six thousand.

Scientific notation

• Scientific notation: 2.1356 × 10⁷

Factors of 21356000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 307

Divisors of 21356000

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 25 32 38 40 50 76 80 95 100 125 152 160 190 200 250 281 304 380 400 475 500 562 608 760 800 950 1000 1124 1405 1520 1900 2000 2248 2375 2810 3040 3800 4000 4496 4750 5339 5620 7025 7600 8992 9500 10678 11240 14050 15200 19000 21356 22480 26695 28100 35125 38000 42712 44960 53390 56200 70250 76000 85424 106780 112400 133475 140500 170848 213560 224800 266950 281000 427120 533900 562000 667375 854240 1067800 1124000 1334750 2135600 2669500 4271200 5339000 10678000 21356000
• Sum of all divisors σ(n): 55429920
• Sum of proper divisors (its aliquot sum) s(n): 34073920
• 21356000 is an abundant number, because the sum of its proper divisors (34073920) is greater than itself. Its abundance is 12717920

Bases of 21356000

• Binary: 1010001011101110111100000₂
• Hexadecimal: 0x145DDE0
• Base-36: CPQE8

Squares and roots of 21356000

• 21356000 squared (21356000²) is 456078736000000
• 21356000 cubed (21356000³) is 9740017486016000000000
• The square root of 21356000 is 4621.2552407327
• The cube root of 21356000 is 277.4427011529

Scales and comparisons

• 21,356,000 seconds is equal to 35 weeks, 2 days, 4 hours, 13 minutes, 20 seconds.
• To count from 1 to 21,356,000 would take you about six days!

  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 21356000 cubic inches would be around 23.1 feet tall.

Recreational maths with 21356000

• 21356000 backwards is 00065312
• The number of decimal digits it has is: 8
• The sum of 21356000's digits is 17
• More coming soon!