21953008

Names of 21953008

• Cardinal: 21953008 can be written as Twenty-one million, nine hundred fifty-three thousand and eight.

Scientific notation

• Scientific notation: 2.1953008 × 10⁷

Factors of 21953008

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 296

Divisors of 21953008

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 44 56 77 88 103 112 154 173 176 206 308 346 412 616 692 721 824 1133 1211 1232 1384 1442 1648 1903 2266 2422 2768 2884 3806 4532 4844 5768 7612 7931 9064 9688 11536 13321 15224 15862 17819 18128 19376 26642 30448 31724 35638 53284 63448 71276 106568 124733 126896 142552 196009 213136 249466 285104 392018 498932 784036 997864 1372063 1568072 1995728 2744126 3136144 5488252 10976504 21953008
• Sum of all divisors σ(n): 53853696
• Sum of proper divisors (its aliquot sum) s(n): 31900688
• 21953008 is an abundant number, because the sum of its proper divisors (31900688) is greater than itself. Its abundance is 9947680

Bases of 21953008

• Binary: 1010011101111100111110000₂
• Hexadecimal: 0x14EF9F0
• Base-36: D2J1S

Squares and roots of 21953008

• 21953008 squared (21953008²) is 481934560248064
• 21953008 cubed (21953008³) is 10579913256602230976512
• The square root of 21953008 is 4685.4037179309
• The cube root of 21953008 is 280.0042856489

Scales and comparisons

• 21,953,008 seconds is equal to 36 weeks, 2 days, 2 hours, 3 minutes, 28 seconds.
• To count from 1 to 21,953,008 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 21953008 cubic inches would be around 23.3 feet tall.

Recreational maths with 21953008

• 21953008 backwards is 80035912
• 21953008 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21953008's digits is 28
• More coming soon!