21328650

Names of 21328650

• Cardinal: 21328650 can be written as Twenty-one million, three hundred twenty-eight thousand, six hundred fifty.

Scientific notation

• Scientific notation: 2.132865 × 10⁷

Factors of 21328650

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 115

Divisors of 21328650

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 25 27 30 35 37 42 45 50 54 61 63 70 74 75 90 105 111 122 126 135 150 175 183 185 189 210 222 225 259 270 305 315 333 350 366 370 378 427 450 518 525 549 555 610 630 666 675 777 854 915 925 945 999 1050 1098 1110 1281 1295 1350 1525 1554 1575 1647 1665 1830 1850 1890 1998 2135 2257 2331 2562 2590 2745 2775 3050 3150 3294 3330 3843 3885 4270 4514 4575 4662 4725 4995 5490 5550 6405 6475 6771 6993 7686 7770 8235 8325 9150 9450 9990 10675 11285 11529 11655 12810 12950 13542 13725 13986 15799 16470 16650 19215 19425 20313 21350 22570 23058 23310 24975 27450 31598 32025 33855 34965 38430 38850 40626 41175 47397 49950 56425 57645 58275 60939 64050 67710 69930 78995 82350 94794 96075 101565 112850 115290 116550 121878 142191 157990 169275 174825 192150 203130 236985 284382 288225 304695 338550 349650 394975 426573 473970 507825 576450 609390 710955 789950 853146 1015650 1184925 1421910 1523475 2132865 2369850 3046950 3554775 4265730 7109550 10664325 21328650
• Sum of all divisors σ(n): 70114560
• Sum of proper divisors (its aliquot sum) s(n): 48785910
• 21328650 is an abundant number, because the sum of its proper divisors (48785910) is greater than itself. Its abundance is 27457260

Bases of 21328650

• Binary: 1010001010111001100001010₂
• Hexadecimal: 0x145730A
• Base-36: CP5AI

Squares and roots of 21328650

• 21328650 squared (21328650²) is 454911310822500
• 21328650 cubed (21328650³) is 9702644129574314625000
• The square root of 21328650 is 4618.2951399841
• The cube root of 21328650 is 277.3242129927

Scales and comparisons

• 21,328,650 seconds is equal to 35 weeks, 1 day, 20 hours, 37 minutes, 30 seconds.
• To count from 1 to 21,328,650 would take you about six 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 21328650 cubic inches would be around 23.1 feet tall.

Recreational maths with 21328650

• 21328650 backwards is 05682312
• 21328650 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21328650's digits is 27
• More coming soon!