21429912
21,429,912 is an even composite number composed of five prime numbers multiplied together.
21429912 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21429912:
23 × 3 × 7 × 199 × 641
(2 × 2 × 2 × 3 × 7 × 199 × 641)See below for interesting mathematical facts about the number 21429912 from the Numbermatics database.
Names of 21429912
- Cardinal: 21429912 can be written as Twenty-one million, four hundred twenty-nine thousand, nine hundred twelve.
Scientific notation
- Scientific notation: 2.1429912 × 107
Factors of 21429912
Divisors of 21429912
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 199 398 597 641 796 1194 1282 1393 1592 1923 2388 2564 2786 3846 4179 4487 4776 5128 5572 7692 8358 8974 11144 13461 15384 16716 17948 26922 33432 35896 53844 107688 127559 255118 382677 510236 765354 892913 1020472 1530708 1785826 2678739 3061416 3571652 5357478 7143304 10714956 21429912
- Sum of all divisors σ(n): 61632000
- Sum of proper divisors (its aliquot sum) s(n): 40202088
- 21429912 is an abundant number, because the sum of its proper divisors (40202088) is greater than itself. Its abundance is 18772176
Bases of 21429912
- Binary: 10100011011111110100110002
- Hexadecimal: 0x146FE98
- Base-36: CRBFC
Squares and roots of 21429912
- 21429912 squared (214299122) is 459241128327744
- 21429912 cubed (214299123) is 9841496966844261078528
-
The
square root of 21429912 is 4629.2452948617 -
The
cube root of 21429912 is 277.7624041743
Scales and comparisons
How big is 21429912?- 21,429,912 seconds is equal to 35 weeks, 3 days, 45 minutes, 12 seconds.
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To count from 1 to 21,429,912 would take you about seven minutes!
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 21429912 cubic inches would be around 23.1 feet tall.
Recreational maths with 21429912
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