21153368880

Names of 21153368880

• Cardinal: 21153368880 can be written as Twenty-one billion, one hundred fifty-three million, three hundred sixty-eight thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.115336888 × 10¹⁰

Factors of 21153368880

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4197114

Divisors of 21153368880

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 35 36 40 42 45 48 56 60 63 70 72 80 84 90 105 112 120 126 140 144 168 180 210 240 252 280 315 336 360 420 504 560 630 720 840 1008 1260 1680 2520 5040 4197097 8394194 12591291 16788388 20985485 25182582 29379679 33576776 37773873 41970970 50365164 58759358 62956455 67153552 75547746 83941940 88139037 100730328 117518716 125912910 146898395 151095492 167883880 176278074 188869365 201460656 235037432 251825820 264417111 293796790 302190984 335767760 352556148 377738730 440695185 470074864 503651640 528834222 587593580 604381968 705112296 755477460 881390370 1007303280 1057668444 1175187160 1322085555 1410224592 1510954920 1762780740 2115336888 2350374320 2644171110 3021909840 3525561480 4230673776 5288342220 7051122960 10576684440 21153368880
• Sum of all divisors σ(n): 81188663712
• Sum of proper divisors (its aliquot sum) s(n): 60035294832
• 21153368880 is an abundant number, because the sum of its proper divisors (60035294832) is greater than itself. Its abundance is 38881925952

Bases of 21153368880

• Binary: 10011101100110101101100101100110000₂
• Hexadecimal: 0x4ECD6CB30
• Base-36: 9PU63W0

Squares and roots of 21153368880

• 21153368880 squared (21153368880²) is 447465014973352454400
• 21153368880 cubed (21153368880³) is 9465392522626047838176579072000
• The square root of 21153368880 is 145441.9777093257
• The cube root of 21153368880 is 2765.6242904071

Scales and comparisons

• 21,153,368,880 seconds is equal to 672 years, 31 weeks, 5 days, 15 hours, 48 minutes.
• To count from 1 to 21,153,368,880 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 21153368880 cubic inches would be around 230.5 feet tall.

Recreational maths with 21153368880

• 21153368880 backwards is 08886335112
• 21153368880 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21153368880's digits is 45
• More coming soon!