21321090
21,321,090 is an even composite number composed of six prime numbers multiplied together.
21321090 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21321090:
2 × 33 × 5 × 7 × 29 × 389
(2 × 3 × 3 × 3 × 5 × 7 × 29 × 389)See below for interesting mathematical facts about the number 21321090 from the Numbermatics database.
Names of 21321090
- Cardinal: 21321090 can be written as Twenty-one million, three hundred twenty-one thousand and ninety.
Scientific notation
- Scientific notation: 2.132109 × 107
Factors of 21321090
Divisors of 21321090
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 7 9 10 14 15 18 21 27 29 30 35 42 45 54 58 63 70 87 90 105 126 135 145 174 189 203 210 261 270 290 315 378 389 406 435 522 609 630 778 783 870 945 1015 1167 1218 1305 1566 1827 1890 1945 2030 2334 2610 2723 3045 3501 3654 3890 3915 5446 5481 5835 6090 7002 7830 8169 9135 10503 10962 11281 11670 13615 16338 17505 18270 21006 22562 24507 27230 27405 33843 35010 40845 49014 52515 54810 56405 67686 73521 78967 81690 101529 105030 112810 122535 147042 157934 169215 203058 236901 245070 304587 338430 367605 394835 473802 507645 609174 710703 735210 789670 1015290 1184505 1421406 1522935 2132109 2369010 3045870 3553515 4264218 7107030 10660545 21321090
- Sum of all divisors σ(n): 67392000
- Sum of proper divisors (its aliquot sum) s(n): 46070910
- 21321090 is an abundant number, because the sum of its proper divisors (46070910) is greater than itself. Its abundance is 24749820
Bases of 21321090
- Binary: 10100010101010101100000102
- Hexadecimal: 0x1455582
- Base-36: COZGI
Squares and roots of 21321090
- 21321090 squared (213210902) is 454588878788100
- 21321090 cubed (213210903) is 9692330397640171029000
-
The
square root of 21321090 is 4617.4765835897 -
The
cube root of 21321090 is 277.2914430047
Scales and comparisons
How big is 21321090?- 21,321,090 seconds is equal to 35 weeks, 1 day, 18 hours, 31 minutes, 30 seconds.
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To count from 1 to 21,321,090 would take you about six 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 21321090 cubic inches would be around 23.1 feet tall.
Recreational maths with 21321090
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