21398842920
21,398,842,920 is an even composite number composed of seven prime numbers multiplied together.
21398842920 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21398842920:
23 × 3 × 5 × 72 × 13 × 271 × 1033
(2 × 2 × 2 × 3 × 5 × 7 × 7 × 13 × 271 × 1033)See below for interesting mathematical facts about the number 21398842920 from the Numbermatics database.
Names of 21398842920
- Cardinal: 21398842920 can be written as Twenty-one billion, three hundred ninety-eight million, eight hundred forty-two thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.139884292 × 1010
Factors of 21398842920
Divisors of 21398842920
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 13 14 15 20 21 24 26 28 30 35 39 40 42 49 52 56 60 65 70 78 84 91 98 104 105 120 130 140 147 156 168 182 195 196 210 245 260 271 273 280 294 312 364 390 392 420 455 490 520 542 546 588 637 728 735 780 813 840 910 980 1033 1084 1092 1176 1274 1355 1365 1470 1560 1626 1820 1897 1911 1960 2066 2168 2184 2548 2710 2730 2940 3099 3185 3252 3523 3640 3794 3822 4065 4132 5096 5165 5420 5460 5691 5880 6198 6370 6504 7046 7231 7588 7644 8130 8264 9485 9555 10330 10569 10840 10920 11382 12396 12740 13279 13429 14092 14462 15176 15288 15495 16260 17615 18970 19110 20660 21138 21693 22764 24661 24792 25480 26558 26858 28184 28455 28924 30990 32520 35230 36155 37940 38220 39837 40287 41320 42276 43386 45528 49322 50617 52845 53116 53716 56910 57848 61980 66395 67145 70460 72310 73983 75880 76440 79674 80574 84552 86772 94003 98644 101234 105690 106232 107432 108465 113820 123305 123960 132790 134290 140920 144620 147966 151851 159348 161148 172627 173544 188006 197288 199185 201435 202468 211380 216930 227640 246610 253085 265580 268580 279943 282009 289240 295932 303702 318696 322296 345254 369915 376012 398370 402870 404936 422760 433860 470015 493220 506170 517881 531160 537160 559886 564018 591864 607404 658021 690508 739830 752024 759255 796740 805740 839829 863135 867720 940030 986440 1012340 1035762 1119772 1128036 1214808 1316042 1381016 1399715 1410045 1479660 1518510 1593480 1611480 1679658 1726270 1880060 1959601 1974063 2024680 2071524 2239544 2256072 2589405 2632084 2799430 2820090 2959320 3037020 3290105 3359316 3452540 3639259 3760120 3919202 3948126 4143048 4199145 5178810 5264168 5598860 5640180 5878803 6074040 6580210 6718632 6905080 7278518 7838404 7896252 8398290 9798005 9870315 10357620 10917777 11197720 11280360 11757606 13160420 13717207 14557036 15676808 15792504 16796580 18196295 19596010 19740630 20715240 21835554 23515212 25474813 26320840 27434414 29114072 29394015 33593160 36392590 39192020 39481260 41151621 43671108 47030424 50949626 54588885 54868828 58788030 68586035 72785180 76424439 78384040 78962520 82303242 87342216 101899252 109177770 109737656 117576060 127374065 137172070 145570360 152848878 164606484 178323691 203798504 205758105 218355540 235152120 254748130 274344140 305697756 329212968 356647382 382122195 411516210 436711080 509496260 534971073 548688280 611395512 713294764 764244390 823032420 891618455 1018992520 1069942146 1426589528 1528488780 1646064840 1783236910 2139884292 2674855365 3056977560 3566473820 4279768584 5349710730 7132947640 10699421460 21398842920
- Sum of all divisors σ(n): 80796925440
- Sum of proper divisors (its aliquot sum) s(n): 59398082520
- 21398842920 is an abundant number, because the sum of its proper divisors (59398082520) is greater than itself. Its abundance is 37999239600
Bases of 21398842920
- Binary: 100111110110111100001101110001010002
- Hexadecimal: 0x4FB786E28
- Base-36: 9TWBGVC
Squares and roots of 21398842920
- 21398842920 squared (213988429202) is 457910478314834126400
- 21398842920 cubed (213988429203) is 9798754396881201776689025088000
-
The
square root of 21398842920 is 146283.4335117959 -
The
cube root of 21398842920 is 2776.2810596813
Scales and comparisons
How big is 21398842920?- 21,398,842,920 seconds is equal to 680 years, 21 weeks, 4 days, 19 hours, 2 minutes.
-
To count from 1 to 21,398,842,920 would take you about one thousand, three hundred sixty 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 21398842920 cubic inches would be around 231.4 feet tall.
Recreational maths with 21398842920
- 21398842920 backwards is 02924889312
- The number of decimal digits it has is: 11
- The sum of 21398842920's digits is 48
- More coming soon!
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