21293520
21,293,520 is an even composite number composed of five prime numbers multiplied together.
21293520 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 21293520:
24 × 3 × 5 × 172 × 307
(2 × 2 × 2 × 2 × 3 × 5 × 17 × 17 × 307)See below for interesting mathematical facts about the number 21293520 from the Numbermatics database.
Names of 21293520
- Cardinal: 21293520 can be written as Twenty-one million, two hundred ninety-three thousand, five hundred twenty.
Scientific notation
- Scientific notation: 2.129352 × 107
Factors of 21293520
Divisors of 21293520
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 34 40 48 51 60 68 80 85 102 120 136 170 204 240 255 272 289 307 340 408 510 578 614 680 816 867 921 1020 1156 1228 1360 1445 1535 1734 1842 2040 2312 2456 2890 3070 3468 3684 4080 4335 4605 4624 4912 5219 5780 6140 6936 7368 8670 9210 10438 11560 12280 13872 14736 15657 17340 18420 20876 23120 24560 26095 31314 34680 36840 41752 52190 62628 69360 73680 78285 83504 88723 104380 125256 156570 177446 208760 250512 266169 313140 354892 417520 443615 532338 626280 709784 887230 1064676 1252560 1330845 1419568 1774460 2129352 2661690 3548920 4258704 5323380 7097840 10646760 21293520
- Sum of all divisors σ(n): 70349664
- Sum of proper divisors (its aliquot sum) s(n): 49056144
- 21293520 is an abundant number, because the sum of its proper divisors (49056144) is greater than itself. Its abundance is 27762624
Bases of 21293520
- Binary: 10100010011101001110100002
- Hexadecimal: 0x144E9D0
- Base-36: COE6O
Squares and roots of 21293520
- 21293520 squared (212935202) is 453413993990400
- 21293520 cubed (212935203) is 9654779949314462208000
-
The
square root of 21293520 is 4614.4902210321 -
The
cube root of 21293520 is 277.1718709029
Scales and comparisons
How big is 21293520?- 21,293,520 seconds is equal to 35 weeks, 1 day, 10 hours, 52 minutes.
-
To count from 1 to 21,293,520 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 21293520 cubic inches would be around 23.1 feet tall.
Recreational maths with 21293520
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