21152636800

Names of 21152636800

• Cardinal: 21152636800 can be written as Twenty-one billion, one hundred fifty-two million, six hundred thirty-six thousand, eight hundred.

Scientific notation

• Scientific notation: 2.11526368 × 10¹⁰

Factors of 21152636800

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 6610206

Divisors of 21152636800

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 320 400 640 800 1600 3200 6610199 13220398 26440796 33050995 52881592 66101990 105763184 132203980 165254975 211526368 264407960 330509950 423052736 528815920 661019900 846105472 1057631840 1322039800 2115263680 2644079600 4230527360 5288159200 10576318400 21152636800
• Sum of all divisors σ(n): 52253631000
• Sum of proper divisors (its aliquot sum) s(n): 31100994200
• 21152636800 is an abundant number, because the sum of its proper divisors (31100994200) is greater than itself. Its abundance is 9948357400

Bases of 21152636800

• Binary: 10011101100110010111001111110000000₂
• Hexadecimal: 0x4ECCB9F80
• Base-36: 9PTQF0G

Squares and roots of 21152636800

• 21152636800 squared (21152636800²) is 447434043592714240000
• 21152636800 cubed (21152636800³) is 9464409816072051444908032000000
• The square root of 21152636800 is 145439.4609450957
• The cube root of 21152636800 is 2765.5923856135

Scales and comparisons

• 21,152,636,800 seconds is equal to 672 years, 30 weeks, 4 days, 4 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,152,636,800 would take you about one thousand, three hundred forty-five 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 21152636800 cubic inches would be around 230.5 feet tall.

Recreational maths with 21152636800

• 21152636800 backwards is 00863625112
• The number of decimal digits it has is: 11
• The sum of 21152636800's digits is 34
• More coming soon!