21102320

Names of 21102320

• Cardinal: 21102320 can be written as Twenty-one million, one hundred two thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.110232 × 10⁷

Factors of 21102320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 232

Divisors of 21102320

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 31 40 62 67 80 124 127 134 155 248 254 268 310 335 496 508 536 620 635 670 1016 1072 1240 1270 1340 2032 2077 2480 2540 2680 3937 4154 5080 5360 7874 8308 8509 10160 10385 15748 16616 17018 19685 20770 31496 33232 34036 39370 41540 42545 62992 68072 78740 83080 85090 136144 157480 166160 170180 263779 314960 340360 527558 680720 1055116 1318895 2110232 2637790 4220464 5275580 10551160 21102320
• Sum of all divisors σ(n): 51806208
• Sum of proper divisors (its aliquot sum) s(n): 30703888
• 21102320 is an abundant number, because the sum of its proper divisors (30703888) is greater than itself. Its abundance is 9601568

Bases of 21102320

• Binary: 1010000011111111011110000₂
• Hexadecimal: 0x141FEF0
• Base-36: CKANK

Squares and roots of 21102320

• 21102320 squared (21102320²) is 445307909382400
• 21102320 cubed (21102320³) is 9397030002318407168000
• The square root of 21102320 is 4593.7261564007
• The cube root of 21102320 is 276.3397761761

Scales and comparisons

• 21,102,320 seconds is equal to 34 weeks, 6 days, 5 hours, 45 minutes, 20 seconds.
• To count from 1 to 21,102,320 would take you about two 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 21102320 cubic inches would be around 23 feet tall.

Recreational maths with 21102320

• 21102320 backwards is 02320112
• The number of decimal digits it has is: 8
• The sum of 21102320's digits is 11
• More coming soon!