21998550

Names of 21998550

• Cardinal: 21998550 can be written as Twenty-one million, nine hundred ninety-eight thousand, five hundred fifty.

Scientific notation

• Scientific notation: 2.199855 × 10⁷

Factors of 21998550

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 131

Divisors of 21998550

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 25 30 35 41 42 49 50 70 73 75 82 98 105 123 146 147 150 175 205 210 219 245 246 287 294 350 365 410 438 490 511 525 574 615 730 735 861 1022 1025 1050 1095 1225 1230 1435 1470 1533 1722 1825 2009 2050 2190 2450 2555 2870 2993 3066 3075 3577 3650 3675 4018 4305 5110 5475 5986 6027 6150 7154 7175 7350 7665 8610 8979 10045 10731 10950 12054 12775 14350 14965 15330 17885 17958 20090 20951 21462 21525 25550 29930 30135 35770 38325 41902 43050 44895 50225 53655 60270 62853 74825 76650 89425 89790 100450 104755 107310 125706 146657 149650 150675 178850 209510 224475 268275 293314 301350 314265 439971 448950 523775 536550 628530 733285 879942 1047550 1466570 1571325 2199855 3142650 3666425 4399710 7332850 10999275 21998550
• Sum of all divisors σ(n): 65902032
• Sum of proper divisors (its aliquot sum) s(n): 43903482
• 21998550 is an abundant number, because the sum of its proper divisors (43903482) is greater than itself. Its abundance is 21904932

Bases of 21998550

• Binary: 1010011111010101111010110₂
• Hexadecimal: 0x14FABD6
• Base-36: D3I6U

Squares and roots of 21998550

• 21998550 squared (21998550²) is 483936202102500
• 21998550 cubed (21998550³) is 10645894738761951375000
• The square root of 21998550 is 4690.2611867571
• The cube root of 21998550 is 280.1977769347

Scales and comparisons

• 21,998,550 seconds is equal to 36 weeks, 2 days, 14 hours, 42 minutes, 30 seconds.
• To count from 1 to 21,998,550 would take you about two 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 21998550 cubic inches would be around 23.3 feet tall.

Recreational maths with 21998550

• 21998550 backwards is 05589912
• The number of decimal digits it has is: 8
• The sum of 21998550's digits is 39
• More coming soon!