21312478720
21,312,478,720 is an even composite number composed of six prime numbers multiplied together.
21312478720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21312478720:
29 × 5 × 13 × 43 × 53 × 281
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 13 × 43 × 53 × 281)See below for interesting mathematical facts about the number 21312478720 from the Numbermatics database.
Names of 21312478720
- Cardinal: 21312478720 can be written as Twenty-one billion, three hundred twelve million, four hundred seventy-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.131247872 × 1010
Factors of 21312478720
Divisors of 21312478720
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 4 5 8 10 13 16 20 26 32 40 43 52 53 64 65 80 86 104 106 128 130 160 172 208 212 215 256 260 265 281 320 344 416 424 430 512 520 530 559 562 640 688 689 832 848 860 1040 1060 1118 1124 1280 1376 1378 1405 1664 1696 1720 2080 2120 2236 2248 2279 2560 2752 2756 2795 2810 3328 3392 3440 3445 3653 4160 4240 4472 4496 4558 5504 5512 5590 5620 6656 6784 6880 6890 7306 8320 8480 8944 8992 9116 11008 11024 11180 11240 11395 12083 13568 13760 13780 14612 14893 16640 16960 17888 17984 18232 18265 22016 22048 22360 22480 22790 24166 27136 27520 27560 29224 29627 29786 33280 33920 35776 35968 36464 36530 44096 44720 44960 45580 48332 55040 55120 58448 59254 59572 60415 67840 71552 71936 72928 73060 74465 88192 89440 89920 91160 96664 110080 110240 116896 118508 119144 120830 135680 143104 143872 145856 146120 148135 148930 157079 176384 178880 179840 182320 193328 193609 220480 233792 237016 238288 241660 286208 291712 292240 296270 297860 314158 352768 357760 359680 364640 386656 387218 440960 467584 474032 476576 483320 583424 584480 592540 595720 628316 640399 715520 719360 729280 773312 774436 785395 881920 935168 948064 953152 966640 968045 1166848 1168960 1185080 1191440 1256632 1280798 1431040 1458560 1546624 1548872 1570790 1763840 1870336 1896128 1906304 1933280 1936090 2337920 2370160 2382880 2513264 2561596 2917120 3093248 3097744 3141580 3201995 3792256 3812608 3866560 3872180 4675840 4740320 4765760 5026528 5123192 5834240 6186496 6195488 6283160 6403990 7584512 7625216 7733120 7744360 8325187 9351680 9480640 9531520 10053056 10246384 12390976 12566320 12807980 15169024 15466240 15488720 16650374 18961280 19063040 20106112 20492768 24781952 25132640 25615960 30932480 30977440 33300748 37922560 38126080 40212224 40985536 41625935 49563904 50265280 51231920 61954880 66601496 75845120 80424448 81971072 83251870 99127808 100530560 102463840 123909760 133202992 163942144 166503740 201061120 204927680 247819520 266405984 327884288 333007480 402122240 409855360 495639040 532811968 666014960 819710720 1065623936 1332029920 1639421440 2131247872 2664059840 4262495744 5328119680 10656239360 21312478720
- Sum of all divisors σ(n): 57577189824
- Sum of proper divisors (its aliquot sum) s(n): 36264711104
- 21312478720 is an abundant number, because the sum of its proper divisors (36264711104) is greater than itself. Its abundance is 14952232384
Bases of 21312478720
- Binary: 100111101100101001010011110000000002
- Hexadecimal: 0x4F6529E00
- Base-36: 9SGWDTS
Squares and roots of 21312478720
- 21312478720 squared (213124787202) is 454221749190452838400
- 21312478720 cubed (213124787203) is 9680591363782703345563598848000
-
The
square root of 21312478720 is 145987.9403238501 -
The
cube root of 21312478720 is 2772.5410664273
Scales and comparisons
How big is 21312478720?- 21,312,478,720 seconds is equal to 677 years, 34 weeks, 6 days, 4 hours, 58 minutes, 40 seconds.
-
To count from 1 to 21,312,478,720 would take you about one thousand, three hundred fifty-five 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 21312478720 cubic inches would be around 231 feet tall.
Recreational maths with 21312478720
- 21312478720 backwards is 02787421312
- The number of decimal digits it has is: 11
- The sum of 21312478720's digits is 37
- More coming soon!
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