20814720

Names of 20814720

• Cardinal: 20814720 can be written as Twenty million, eight hundred fourteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.081472 × 10⁷

Factors of 20814720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 340

Divisors of 20814720

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 37 40 48 60 64 74 80 96 111 120 128 148 160 185 192 222 240 293 296 320 370 384 444 480 555 586 592 640 740 879 888 960 1110 1172 1184 1465 1480 1758 1776 1920 2220 2344 2368 2930 2960 3516 3552 4395 4440 4688 4736 5860 5920 7032 7104 8790 8880 9376 10841 11720 11840 14064 14208 17580 17760 18752 21682 23440 23680 28128 32523 35160 35520 37504 43364 46880 54205 56256 65046 70320 71040 86728 93760 108410 112512 130092 140640 162615 173456 187520 216820 260184 281280 325230 346912 433640 520368 562560 650460 693824 867280 1040736 1300920 1387648 1734560 2081472 2601840 3469120 4162944 5203680 6938240 10407360 20814720
• Sum of all divisors σ(n): 68372640
• Sum of proper divisors (its aliquot sum) s(n): 47557920
• 20814720 is an abundant number, because the sum of its proper divisors (47557920) is greater than itself. Its abundance is 26743200

Bases of 20814720

• Binary: 1001111011001101110000000₂
• Hexadecimal: 0x13D9B80
• Base-36: CE4QO

Squares and roots of 20814720

• 20814720 squared (20814720²) is 433252568678400
• 20814720 cubed (20814720³) is 9018030906321666048000
• The square root of 20814720 is 4562.3152017369
• The cube root of 20814720 is 275.0786331609

Scales and comparisons

• 20,814,720 seconds is equal to 34 weeks, 2 days, 21 hours, 52 minutes.
• To count from 1 to 20,814,720 would take you about fifty-one weeks!

  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 20814720 cubic inches would be around 22.9 feet tall.

Recreational maths with 20814720

• 20814720 backwards is 02741802
• 20814720 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20814720's digits is 24
• More coming soon!