20431872

Names of 20431872

• Cardinal: 20431872 can be written as Twenty million, four hundred thirty-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.0431872 × 10⁷

Factors of 20431872

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 744

Divisors of 20431872

• Number of divisors d(n): 88
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 216 256 288 384 432 512 576 739 768 864 1024 1152 1478 1536 1728 2217 2304 2956 3072 3456 4434 4608 5912 6651 6912 8868 9216 11824 13302 13824 17736 19953 23648 26604 27648 35472 39906 47296 53208 70944 79812 94592 106416 141888 159624 189184 212832 283776 319248 378368 425664 567552 638496 756736 851328 1135104 1276992 1702656 2270208 2553984 3405312 5107968 6810624 10215936 20431872
• Sum of all divisors σ(n): 60591200
• Sum of proper divisors (its aliquot sum) s(n): 40159328
• 20431872 is an abundant number, because the sum of its proper divisors (40159328) is greater than itself. Its abundance is 19727456

Bases of 20431872

• Binary: 1001101111100010000000000₂
• Hexadecimal: 0x137C400
• Base-36: C5XC0

Squares and roots of 20431872

• 20431872 squared (20431872²) is 417461393424384
• 20431872 cubed (20431872³) is 8529517755388655566848
• The square root of 20431872 is 4520.1628289255
• The cube root of 20431872 is 273.3816663817

Scales and comparisons

• 20,431,872 seconds is equal to 33 weeks, 5 days, 11 hours, 31 minutes, 12 seconds.
• To count from 1 to 20,431,872 would take you about fifty 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 20431872 cubic inches would be around 22.8 feet tall.

Recreational maths with 20431872

• 20431872 backwards is 27813402
• 20431872 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20431872's digits is 27
• More coming soon!