21016590

Names of 21016590

• Cardinal: 21016590 can be written as Twenty-one million, sixteen thousand, five hundred ninety.

Scientific notation

• Scientific notation: 2.101659 × 10⁷

Factors of 21016590

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 63

Divisors of 21016590

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 17 21 29 30 34 35 42 49 51 58 70 85 87 98 102 105 119 145 147 170 174 203 210 238 245 255 290 294 357 406 435 490 493 510 595 609 714 735 833 841 870 986 1015 1190 1218 1421 1470 1479 1666 1682 1785 2030 2465 2499 2523 2842 2958 3045 3451 3570 4165 4205 4263 4930 4998 5046 5887 6090 6902 7105 7395 8330 8410 8526 10353 11774 12495 12615 14210 14297 14790 17255 17661 20706 21315 24157 24990 25230 28594 29435 34510 35322 41209 42630 42891 48314 51765 58870 71485 72471 82418 85782 88305 100079 103530 120785 123627 142970 144942 176610 200158 206045 214455 241570 247254 300237 362355 412090 428910 500395 600474 618135 700553 724710 1000790 1236270 1401106 1501185 2101659 3002370 3502765 4203318 7005530 10508295 21016590
• Sum of all divisors σ(n): 64342512
• Sum of proper divisors (its aliquot sum) s(n): 43325922
• 21016590 is an abundant number, because the sum of its proper divisors (43325922) is greater than itself. Its abundance is 22309332

Bases of 21016590

• Binary: 1010000001011000000001110₂
• Hexadecimal: 0x140B00E
• Base-36: CIGI6

Squares and roots of 21016590

• 21016590 squared (21016590²) is 441697055228100
• 21016590 cubed (21016590³) is 9282965913936334179000
• The square root of 21016590 is 4584.3854549983
• The cube root of 21016590 is 275.9650501849

Scales and comparisons

• 21,016,590 seconds is equal to 34 weeks, 5 days, 5 hours, 56 minutes, 30 seconds.
• To count from 1 to 21,016,590 would take you about twenty hours!

  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 21016590 cubic inches would be around 23 feet tall.

Recreational maths with 21016590

• 21016590 backwards is 09561012
• The number of decimal digits it has is: 8
• The sum of 21016590's digits is 24
• More coming soon!