21224007840

Names of 21224007840

• Cardinal: 21224007840 can be written as Twenty-one billion, two hundred twenty-four million, seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.122400784 × 10¹⁰

Factors of 21224007840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 6316686

Divisors of 21224007840

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 480 560 672 840 1120 1680 3360 6316669 12633338 18950007 25266676 31583345 37900014 44216683 50533352 63166690 75800028 88433366 94750035 101066704 126333380 132650049 151600056 176866732 189500070 202133408 221083415 252666760 265300098 303200112 353733464 379000140 442166830 505333520 530600196 606400224 663250245 707466928 758000280 884333660 1010667040 1061200392 1326500490 1414933856 1516000560 1768667320 2122400784 2653000980 3032001120 3537334640 4244801568 5306001960 7074669280 10612003920 21224007840
• Sum of all divisors σ(n): 76406440320
• Sum of proper divisors (its aliquot sum) s(n): 55182432480
• 21224007840 is an abundant number, because the sum of its proper divisors (55182432480) is greater than itself. Its abundance is 33958424640

Bases of 21224007840

• Binary: 10011110001000011001010100010100000₂
• Hexadecimal: 0x4F10CA8A0
• Base-36: 9R0859C

Squares and roots of 21224007840

• 21224007840 squared (21224007840²) is 450458508792381465600
• 21224007840 cubed (21224007840³) is 9560534922204213158165090304000
• The square root of 21224007840 is 145684.6177192363
• The cube root of 21224007840 is 2768.6993524527

Scales and comparisons

• 21,224,007,840 seconds is equal to 674 years, 44 weeks, 4 days, 5 hours, 44 minutes.
• To count from 1 to 21,224,007,840 would take you about one thousand, three hundred forty-nine 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 21224007840 cubic inches would be around 230.7 feet tall.

Recreational maths with 21224007840

• 21224007840 backwards is 04870042212
• 21224007840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21224007840's digits is 30
• More coming soon!