21123726720
21,123,726,720 is an even composite number composed of five prime numbers multiplied together.
21123726720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21123726720:
27 × 3 × 5 × 172 × 38069
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 17 × 17 × 38069)See below for interesting mathematical facts about the number 21123726720 from the Numbermatics database.
Names of 21123726720
- Cardinal: 21123726720 can be written as Twenty-one billion, one hundred twenty-three million, seven hundred twenty-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.112372672 × 1010
Factors of 21123726720
Divisors of 21123726720
- Number of divisors d(n): 192
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 64 68 80 85 96 102 120 128 136 160 170 192 204 240 255 272 289 320 340 384 408 480 510 544 578 640 680 816 867 960 1020 1088 1156 1360 1445 1632 1734 1920 2040 2176 2312 2720 2890 3264 3468 4080 4335 4624 5440 5780 6528 6936 8160 8670 9248 10880 11560 13872 16320 17340 18496 23120 27744 32640 34680 36992 38069 46240 55488 69360 76138 92480 110976 114207 138720 152276 184960 190345 228414 277440 304552 380690 456828 554880 571035 609104 647173 761380 913656 1142070 1218208 1294346 1522760 1827312 1941519 2284140 2436416 2588692 3045520 3235865 3654624 3883038 4568280 4872832 5177384 6091040 6471730 7309248 7766076 9136560 9707595 10354768 11001941 12182080 12943460 14618496 15532152 18273120 19415190 20709536 22003882 24364160 25886920 31064304 33005823 36546240 38830380 41419072 44007764 51773840 55009705 62128608 66011646 73092480 77660760 82838144 88015528 103547680 110019410 124257216 132023292 155321520 165029115 176031056 207095360 220038820 248514432 264046584 310643040 330058230 352062112 414190720 440077640 528093168 621286080 660116460 704124224 880155280 1056186336 1242572160 1320232920 1408248448 1760310560 2112372672 2640465840 3520621120 4224745344 5280931680 7041242240 10561863360 21123726720
- Sum of all divisors σ(n): 71527438800
- Sum of proper divisors (its aliquot sum) s(n): 50403712080
- 21123726720 is an abundant number, because the sum of its proper divisors (50403712080) is greater than itself. Its abundance is 29279985360
Bases of 21123726720
- Binary: 100111010110001001001111101100000002
- Hexadecimal: 0x4EB127D80
- Base-36: 9PCIRUO
Squares and roots of 21123726720
- 21123726720 squared (211237267202) is 446211830541241958400
- 21123726720 cubed (211237267203) is 9425656767584144818639208448000
-
The
square root of 21123726720 is 145340.0382551209 -
The
cube root of 21123726720 is 2764.3318658543
Scales and comparisons
How big is 21123726720?- 21,123,726,720 seconds is equal to 671 years, 34 weeks, 5 days, 13 hours, 52 minutes.
-
To count from 1 to 21,123,726,720 would take you about one thousand, three hundred forty-three years!
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 21123726720 cubic inches would be around 230.4 feet tall.
Recreational maths with 21123726720
- 21123726720 backwards is 02762732112
- The number of decimal digits it has is: 11
- The sum of 21123726720's digits is 33
- More coming soon!
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