21221390400
21,221,390,400 is an even composite number composed of five prime numbers multiplied together.
21221390400 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred fifty-two divisors.
Prime factorization of 21221390400:
26 × 3 × 52 × 72 × 90227
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 5 × 7 × 7 × 90227)See below for interesting mathematical facts about the number 21221390400 from the Numbermatics database.
Names of 21221390400
- Cardinal: 21221390400 can be written as Twenty-one billion, two hundred twenty-one million, three hundred ninety thousand, four hundred.
Scientific notation
- Scientific notation: 2.12213904 × 1010
Factors of 21221390400
Divisors of 21221390400
- Number of divisors d(n): 252
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 32 35 40 42 48 49 50 56 60 64 70 75 80 84 96 98 100 105 112 120 140 147 150 160 168 175 192 196 200 210 224 240 245 280 294 300 320 336 350 392 400 420 448 480 490 525 560 588 600 672 700 735 784 800 840 960 980 1050 1120 1176 1200 1225 1344 1400 1470 1568 1600 1680 1960 2100 2240 2352 2400 2450 2800 2940 3136 3360 3675 3920 4200 4704 4800 4900 5600 5880 6720 7350 7840 8400 9408 9800 11200 11760 14700 15680 16800 19600 23520 29400 33600 39200 47040 58800 78400 90227 117600 180454 235200 270681 360908 451135 541362 631589 721816 902270 1082724 1263178 1353405 1443632 1804540 1894767 2165448 2255675 2526356 2706810 2887264 3157945 3609080 3789534 4330896 4421123 4511350 5052712 5413620 5774528 6315890 6767025 7218160 7579068 8661792 8842246 9022700 9473835 10105424 10827240 12631780 13263369 13534050 14436320 15158136 15789725 17323584 17684492 18045400 18947670 20210848 21654480 22105615 25263560 26526738 27068100 28872640 30316272 31579450 35368984 36090800 37895340 40421696 43308960 44211230 47369175 50527120 53053476 54136200 60632544 63158900 66316845 70737968 72181600 75790680 86617920 88422460 94738350 101054240 106106952 108272400 110528075 121265088 126317800 132633690 141475936 144363200 151581360 176844920 189476700 202108480 212213904 216544800 221056150 252635600 265267380 282951872 303162720 331584225 353689840 378953400 424427808 433089600 442112300 505271200 530534760 606325440 663168450 707379680 757906800 848855616 884224600 1010542400 1061069520 1326336900 1414759360 1515813600 1768449200 2122139040 2652673800 3031627200 3536898400 4244278080 5305347600 7073796800 10610695200 21221390400
- Sum of all divisors σ(n): 80991901008
- Sum of proper divisors (its aliquot sum) s(n): 59770510608
- 21221390400 is an abundant number, because the sum of its proper divisors (59770510608) is greater than itself. Its abundance is 38549120208
Bases of 21221390400
- Binary: 100111100001110010010111000010000002
- Hexadecimal: 0x4F0E4B840
- Base-36: 9QYO1MO
Squares and roots of 21221390400
- 21221390400 squared (212213904002) is 450347410509212160000
- 21221390400 cubed (212213904003) is 9556998214045054043787264000000
-
The
square root of 21221390400 is 145675.6342014683 -
The
cube root of 21221390400 is 2768.5855316261
Scales and comparisons
How big is 21221390400?- 21,221,390,400 seconds is equal to 674 years, 40 weeks, 1 day, 22 hours, 40 minutes.
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To count from 1 to 21,221,390,400 would take you about one thousand, three hundred forty-nine 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 21221390400 cubic inches would be around 230.7 feet tall.
Recreational maths with 21221390400
- 21221390400 backwards is 00409312212
- 21221390400 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21221390400's digits is 24
- More coming soon!
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