21713328

Names of 21713328

• Cardinal: 21713328 can be written as Twenty-one million, seven hundred thirteen thousand, three hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1713328 × 10⁷

Factors of 21713328

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1682

Divisors of 21713328

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 28 36 39 42 48 52 56 63 72 78 84 91 104 112 117 126 144 156 168 182 208 234 252 273 312 336 364 468 504 546 624 728 819 936 1008 1092 1456 1638 1657 1872 2184 3276 3314 4368 4971 6552 6628 9942 11599 13104 13256 14913 19884 21541 23198 26512 29826 34797 39768 43082 46396 59652 64623 69594 79536 86164 92792 104391 119304 129246 139188 150787 172328 185584 193869 208782 238608 258492 278376 301574 344656 387738 417564 452361 516984 556752 603148 775476 835128 904722 1033968 1206296 1357083 1550952 1670256 1809444 2412592 2714166 3101904 3618888 5428332 7237776 10856664 21713328
• Sum of all divisors σ(n): 74835488
• Sum of proper divisors (its aliquot sum) s(n): 53122160
• 21713328 is an abundant number, because the sum of its proper divisors (53122160) is greater than itself. Its abundance is 31408832

Bases of 21713328

• Binary: 1010010110101000110110000₂
• Hexadecimal: 0x14B51B0
• Base-36: CXE40

Squares and roots of 21713328

• 21713328 squared (21713328²) is 471468612835584
• 21713328 cubed (21713328³) is 10237152632204045463552
• The square root of 21713328 is 4659.7562167993
• The cube root of 21713328 is 278.9815380701

Scales and comparisons

• 21,713,328 seconds is equal to 35 weeks, 6 days, 7 hours, 28 minutes, 48 seconds.
• To count from 1 to 21,713,328 would take you about five 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 21713328 cubic inches would be around 23.2 feet tall.

Recreational maths with 21713328

• 21713328 backwards is 82331712
• The number of decimal digits it has is: 8
• The sum of 21713328's digits is 27
• More coming soon!