21385131840
21,385,131,840 is an even composite number composed of five prime numbers multiplied together.
21385131840 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred thirty-six divisors.
Prime factorization of 21385131840:
26 × 33 × 5 × 712 × 491
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 71 × 71 × 491)See below for interesting mathematical facts about the number 21385131840 from the Numbermatics database.
Names of 21385131840
- Cardinal: 21385131840 can be written as Twenty-one billion, three hundred eighty-five million, one hundred thirty-one thousand, eight hundred forty.
Scientific notation
- Scientific notation: 2.138513184 × 1010
Factors of 21385131840
Divisors of 21385131840
- Number of divisors d(n): 336
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 71 72 80 90 96 108 120 135 142 144 160 180 192 213 216 240 270 284 288 320 355 360 426 432 480 491 540 568 576 639 710 720 852 864 960 982 1065 1080 1136 1278 1420 1440 1473 1704 1728 1917 1964 2130 2160 2272 2455 2556 2840 2880 2946 3195 3408 3834 3928 4260 4320 4419 4544 4910 5041 5112 5680 5892 6390 6816 7365 7668 7856 8520 8640 8838 9585 9820 10082 10224 11360 11784 12780 13257 13632 14730 15123 15336 15712 17040 17676 19170 19640 20164 20448 22095 22720 23568 25205 25560 26514 29460 30246 30672 31424 34080 34861 35352 38340 39280 40328 40896 44190 45369 47136 50410 51120 53028 58920 60492 61344 66285 68160 69722 70704 75615 76680 78560 80656 88380 90738 94272 100820 102240 104583 106056 117840 120984 122688 132570 136107 139444 141408 151230 153360 157120 161312 174305 176760 181476 201640 204480 209166 212112 226845 235680 241968 265140 272214 278888 282816 302460 306720 313749 322624 348610 353520 362952 403280 418332 424224 453690 471360 483936 522915 530280 544428 557776 604920 613440 627498 680535 697220 707040 725904 806560 836664 848448 907380 941247 967872 1045830 1060560 1088856 1115552 1209840 1254996 1361070 1394440 1414080 1451808 1568745 1613120 1673328 1814760 1882494 2091660 2121120 2177712 2231104 2419680 2475131 2509992 2722140 2788880 2903616 3137490 3346656 3629520 3764988 4183320 4242240 4355424 4706235 4839360 4950262 5019984 5444280 5577760 6274980 6693312 7259040 7425393 7529976 8366640 8710848 9412470 9900524 10039968 10888560 11155520 12375655 12549960 14518080 14850786 15059952 16733280 18824940 19801048 20079936 21777120 22276179 24751310 25099920 29701572 30119904 33466560 37126965 37649880 39602096 43554240 44552358 49502620 50199840 59403144 60239808 66828537 74253930 75299760 79204192 89104716 99005240 100399680 111380895 118806288 133657074 148507860 150599520 158408384 178209432 198010480 222761790 237612576 267314148 297015720 301199040 334142685 356418864 396020960 445523580 475225152 534628296 594031440 668285370 712837728 792041920 891047160 1069256592 1188062880 1336570740 1425675456 1782094320 2138513184 2376125760 2673141480 3564188640 4277026368 5346282960 7128377280 10692565920 21385131840
- Sum of all divisors σ(n): 76675366080
- Sum of proper divisors (its aliquot sum) s(n): 55290234240
- 21385131840 is an abundant number, because the sum of its proper divisors (55290234240) is greater than itself. Its abundance is 33905102400
Bases of 21385131840
- Binary: 100111110101010011100110111010000002
- Hexadecimal: 0x4FAA73740
- Base-36: 9TO5LC0
Squares and roots of 21385131840
- 21385131840 squared (213851318402) is 457323863814181785600
- 21385131840 cubed (213851318403) is 9779931121244482746782613504000
-
The
square root of 21385131840 is 146236.5612287159 -
The
cube root of 21385131840 is 2775.6879755157
Scales and comparisons
How big is 21385131840?- 21,385,131,840 seconds is equal to 679 years, 51 weeks, 2 hours, 24 minutes.
-
To count from 1 to 21,385,131,840 would take you about one thousand, three hundred fifty-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 21385131840 cubic inches would be around 231.3 feet tall.
Recreational maths with 21385131840
- 21385131840 backwards is 04813158312
- 21385131840 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21385131840's digits is 36
- More coming soon!
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The information we have on file for 21385131840 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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