21384064
21,384,064 is an even composite number composed of four prime numbers multiplied together.
What does the number 21384064 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 64 divisors.
21384064 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21384064:
27 × 13 × 71 × 181
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 13 × 71 × 181)See below for interesting mathematical facts about the number 21384064 from the Numbermatics database.
Names of 21384064
- Cardinal: 21384064 can be written as Twenty-one million, three hundred eighty-four thousand and sixty-four.
Scientific notation
- Scientific notation: 2.1384064 × 107
Factors of 21384064
Divisors of 21384064
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 4 8 13 16 26 32 52 64 71 104 128 142 181 208 284 362 416 568 724 832 923 1136 1448 1664 1846 2272 2353 2896 3692 4544 4706 5792 7384 9088 9412 11584 12851 14768 18824 23168 25702 29536 37648 51404 59072 75296 102808 118144 150592 167063 205616 301184 334126 411232 668252 822464 1336504 1644928 2673008 5346016 10692032 21384064
- Sum of all divisors σ(n): 46781280
- Sum of proper divisors (its aliquot sum) s(n): 25397216
- 21384064 is an abundant number, because the sum of its proper divisors (25397216) is greater than itself. Its abundance is 4013152
Bases of 21384064
- Binary: 10100011001001011100000002
- Hexadecimal: 0x1464B80
- Base-36: CQC1S
Squares and roots of 21384064
- 21384064 squared (213840642) is 457278193156096
- 21384064 cubed (213840643) is 9778466148254318854144
-
The
square root of 21384064 is 4624.2906483049 -
The
cube root of 21384064 is 277.5641774571
Scales and comparisons
How big is 21384064?- 21,384,064 seconds is equal to 35 weeks, 2 days, 12 hours, 1 minute, 4 seconds.
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To count from 1 to 21,384,064 would take you about six 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 21384064 cubic inches would be around 23.1 feet tall.
Recreational maths with 21384064
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