21888020

Names of 21888020

• Cardinal: 21888020 can be written as Twenty-one million, eight hundred eighty-eight thousand and twenty.

Scientific notation

• Scientific notation: 2.188802 × 10⁷

Factors of 21888020

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 319

Divisors of 21888020

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 10 11 14 20 22 28 35 44 55 61 70 77 110 122 140 154 220 233 244 305 308 385 427 466 610 671 770 854 932 1165 1220 1342 1540 1631 1708 2135 2330 2563 2684 3262 3355 4270 4660 4697 5126 6524 6710 8155 8540 9394 10252 12815 13420 14213 16310 17941 18788 23485 25630 28426 32620 35882 46970 51260 56852 71065 71764 89705 93940 99491 142130 156343 179410 198982 284260 312686 358820 397964 497455 625372 781715 994910 1094401 1563430 1989820 2188802 3126860 4377604 5472005 10944010 21888020
• Sum of all divisors σ(n): 58496256
• Sum of proper divisors (its aliquot sum) s(n): 36608236
• 21888020 is an abundant number, because the sum of its proper divisors (36608236) is greater than itself. Its abundance is 14720216

Bases of 21888020

• Binary: 1010011011111110000010100₂
• Hexadecimal: 0x14DFC14
• Base-36: D14WK

Squares and roots of 21888020

• 21888020 squared (21888020²) is 479085419520400
• 21888020 cubed (21888020³) is 10486231244170905608000
• The square root of 21888020 is 4678.4634229627
• The cube root of 21888020 is 279.7277114869

Scales and comparisons

• 21,888,020 seconds is equal to 36 weeks, 1 day, 8 hours, 20 seconds.
• To count from 1 to 21,888,020 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 21888020 cubic inches would be around 23.3 feet tall.

Recreational maths with 21888020

• 21888020 backwards is 02088812
• The number of decimal digits it has is: 8
• The sum of 21888020's digits is 29
• More coming soon!