20421505440
20,421,505,440 is an even composite number composed of six prime numbers multiplied together.
20421505440 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 20421505440:
25 × 32 × 5 × 7 × 31 × 65353
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 31 × 65353)See below for interesting mathematical facts about the number 20421505440 from the Numbermatics database.
Names of 20421505440
- Cardinal: 20421505440 can be written as Twenty billion, four hundred twenty-one million, five hundred five thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.042150544 × 1010
Factors of 20421505440
Divisors of 20421505440
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 31 32 35 36 40 42 45 48 56 60 62 63 70 72 80 84 90 93 96 105 112 120 124 126 140 144 155 160 168 180 186 210 217 224 240 248 252 279 280 288 310 315 336 360 372 420 434 465 480 496 504 558 560 620 630 651 672 720 744 840 868 930 992 1008 1085 1116 1120 1240 1260 1302 1395 1440 1488 1680 1736 1860 1953 2016 2170 2232 2480 2520 2604 2790 2976 3255 3360 3472 3720 3906 4340 4464 4960 5040 5208 5580 6510 6944 7440 7812 8680 8928 9765 10080 10416 11160 13020 14880 15624 17360 19530 20832 22320 26040 31248 34720 39060 44640 52080 62496 65353 78120 104160 130706 156240 196059 261412 312480 326765 392118 457471 522824 588177 653530 784236 914942 980295 1045648 1176354 1307060 1372413 1568472 1829884 1960590 2025943 2091296 2287355 2352708 2614120 2744826 2940885 3136944 3659768 3921180 4051886 4117239 4574710 4705416 5228240 5489652 5881770 6077829 6273888 6862065 7319536 7842360 8103772 8234478 9149420 9410832 10129715 10456480 10979304 11763540 12155658 13724130 14181601 14639072 15684720 16207544 16468956 18233487 18298840 18821664 20259430 20586195 21958608 23527080 24311316 27448260 28363202 30389145 31369440 32415088 32937912 36466974 36597680 40518860 41172390 42544803 43917216 47054160 48622632 54896520 56726404 60778290 64830176 65875824 70908005 72933948 73195360 81037720 82344780 85089606 91167435 94108320 97245264 109793040 113452808 121556580 127634409 131751648 141816010 145867896 162075440 164689560 170179212 182334870 194490528 212724015 219586080 226905616 243113160 255268818 283632020 291735792 324150880 329379120 340358424 364669740 425448030 453811232 486226320 510537636 567264040 583471584 638172045 658758240 680716848 729339480 850896060 972452640 1021075272 1134528080 1276344090 1361433696 1458678960 1701792120 2042150544 2269056160 2552688180 2917357920 3403584240 4084301088 5105376360 6807168480 10210752720 20421505440
- Sum of all divisors σ(n): 82214286336
- Sum of proper divisors (its aliquot sum) s(n): 61792780896
- 20421505440 is an abundant number, because the sum of its proper divisors (61792780896) is greater than itself. Its abundance is 41371275456
Bases of 20421505440
- Binary: 100110000010011011101110001101000002
- Hexadecimal: 0x4C13771A0
- Base-36: 9DQFQG0
Squares and roots of 20421505440
- 20421505440 squared (204215054402) is 417037884435949593600
- 20421505440 cubed (204215054403) is 8516541425694835957268189184000
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The
square root of 20421505440 is 142903.8328387311 -
The
cube root of 20421505440 is 2733.3542315805
Scales and comparisons
How big is 20421505440?- 20,421,505,440 seconds is equal to 649 years, 17 weeks, 5 days, 24 minutes.
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To count from 1 to 20,421,505,440 would take you about one thousand, two hundred ninety-eight 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 20421505440 cubic inches would be around 227.8 feet tall.
Recreational maths with 20421505440
- 20421505440 backwards is 04450512402
- The number of decimal digits it has is: 11
- The sum of 20421505440's digits is 27
- More coming soon!
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