21029281520
21,029,281,520 is an even composite number composed of seven prime numbers multiplied together.
21029281520 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of four hundred eighty divisors.
Prime factorization of 21029281520:
24 × 5 × 13 × 172 × 31 × 37 × 61
(2 × 2 × 2 × 2 × 5 × 13 × 17 × 17 × 31 × 37 × 61)See below for interesting mathematical facts about the number 21029281520 from the Numbermatics database.
Names of 21029281520
- Cardinal: 21029281520 can be written as Twenty-one billion, twenty-nine million, two hundred eighty-one thousand, five hundred twenty.
Scientific notation
- Scientific notation: 2.102928152 × 1010
Factors of 21029281520
Divisors of 21029281520
- Number of divisors d(n): 480
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Complete list of divisors:
1 2 4 5 8 10 13 16 17 20 26 31 34 37 40 52 61 62 65 68 74 80 85 104 122 124 130 136 148 155 170 185 208 221 244 248 260 272 289 296 305 310 340 370 403 442 481 488 496 520 527 578 592 610 620 629 680 740 793 806 884 962 976 1037 1040 1054 1105 1147 1156 1220 1240 1258 1360 1445 1480 1586 1612 1768 1891 1924 2015 2074 2108 2210 2257 2294 2312 2405 2440 2480 2516 2635 2890 2960 3145 3172 3224 3536 3757 3782 3848 3965 4030 4148 4216 4420 4514 4588 4624 4810 4880 5032 5185 5270 5735 5780 6290 6344 6448 6851 7514 7564 7696 7930 8060 8177 8296 8432 8840 8959 9028 9176 9455 9620 10064 10370 10540 10693 11285 11470 11560 12580 12688 13481 13702 14911 15028 15128 15860 16120 16354 16592 17629 17680 17918 18056 18352 18785 18910 19240 19499 20740 21080 21386 22570 22940 23120 24583 25160 26962 27404 29341 29822 30056 30256 31720 32147 32240 32708 34255 35258 35836 36112 37570 37820 38369 38480 38998 40885 41480 42160 42772 44795 45140 45880 49166 50320 53465 53924 54808 58682 59644 60112 63440 64294 65416 67405 68510 69967 70516 71672 74555 75140 75640 76738 77996 81770 82960 85544 88145 89590 90280 91760 97495 98332 106930 107848 109616 116467 117364 119288 122915 128588 130832 134810 137020 139009 139934 141032 143344 146705 149110 150280 151280 153476 155992 160735 163540 171088 176290 179180 180560 191845 194990 196664 213860 215696 229177 232934 234728 238576 245830 253487 257176 269620 274040 278018 279868 282064 293410 298220 300560 306952 311984 321470 327080 331483 349835 352580 358360 383690 389980 393328 417911 427720 458354 465868 469456 491660 498797 506974 514352 539240 546499 548080 556036 559736 582335 586820 596440 613904 642940 652273 654160 662966 695045 699670 705160 716720 767380 779960 835822 855440 909571 916708 931736 983320 997594 1013948 1078480 1092998 1112072 1119472 1145885 1164670 1173640 1189439 1192880 1267435 1285880 1304546 1325932 1390090 1399340 1410320 1534760 1559920 1657415 1671644 1819142 1833416 1863472 1966640 1995188 2027896 2089555 2185996 2224144 2291770 2329340 2347280 2378878 2493985 2534870 2571760 2609092 2651864 2732495 2780180 2798680 3069520 3261365 3314830 3343288 3638284 3666832 3990376 4055792 4179110 4309279 4371992 4547855 4583540 4658680 4757756 4987970 5069740 5218184 5303728 5464990 5560360 5597360 5947195 6522730 6629660 6686576 7104487 7276568 7980752 8358220 8479549 8618558 8743984 9095710 9167080 9317360 9515512 9975940 10139480 10436368 10929980 11120720 11894390 13045460 13259320 14208974 14553136 15462707 16716440 16959098 17237116 18191420 18334160 19031024 19951880 20220463 20278960 21546395 21859960 23788780 26090920 26518640 28417948 30925414 33432880 33918196 34474232 35522435 36382840 39903760 40440926 42397745 43092790 43719920 47577560 52181840 56835896 61850828 67836392 68948464 71044870 72765680 77313535 80881852 84795490 86185580 95155120 101102315 113671792 123701656 135672784 142089740 154627070 161763704 169590980 172371160 202204630 247403312 262866019 284179480 309254140 323527408 339181960 344742320 404409260 525732038 568358960 618508280 678363920 808818520 1051464076 1237016560 1314330095 1617637040 2102928152 2628660190 4205856304 5257320380 10514640760 21029281520
- Sum of all divisors σ(n): 60270475776
- Sum of proper divisors (its aliquot sum) s(n): 39241194256
- 21029281520 is an abundant number, because the sum of its proper divisors (39241194256) is greater than itself. Its abundance is 18211912736
Bases of 21029281520
- Binary: 100111001010111000101011110111100002
- Hexadecimal: 0x4E5715EF0
- Base-36: 9NSAHGW
Squares and roots of 21029281520
- 21029281520 squared (210292815202) is 442230681247413510400
- 21029281520 cubed (210292815203) is 9299793492733243482053047808000
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The
square root of 21029281520 is 145014.7631105191 -
The
cube root of 21029281520 is 2760.2058902627
Scales and comparisons
How big is 21029281520?- 21,029,281,520 seconds is equal to 668 years, 34 weeks, 4 days, 11 hours, 5 minutes, 20 seconds.
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To count from 1 to 21,029,281,520 would take you about one thousand, three hundred thirty-seven 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 21029281520 cubic inches would be around 230 feet tall.
Recreational maths with 21029281520
- 21029281520 backwards is 02518292012
- The number of decimal digits it has is: 11
- The sum of 21029281520's digits is 32
- More coming soon!
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