6421789920
6,421,789,920 is an even composite number composed of seven prime numbers multiplied together.
6421789920 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 6421789920:
25 × 3 × 5 × 7 × 13 × 79 × 1861
(2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 × 13 × 79 × 1861)See below for interesting mathematical facts about the number 6421789920 from the Numbermatics database.
Names of 6421789920
- Cardinal: 6421789920 can be written as Six billion, four hundred twenty-one million, seven hundred eighty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 6.42178992 × 109
Factors of 6421789920
Divisors of 6421789920
- 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 16 20 21 24 26 28 30 32 35 39 40 42 48 52 56 60 65 70 78 79 80 84 91 96 104 105 112 120 130 140 156 158 160 168 182 195 208 210 224 237 240 260 273 280 312 316 336 364 390 395 416 420 455 474 480 520 546 553 560 624 632 672 728 780 790 840 910 948 1027 1040 1092 1106 1120 1185 1248 1264 1365 1456 1560 1580 1659 1680 1820 1861 1896 2054 2080 2184 2212 2370 2528 2730 2765 2912 3081 3120 3160 3318 3360 3640 3722 3792 4108 4368 4424 4740 5135 5460 5530 5583 6162 6240 6320 6636 7189 7280 7444 7584 8216 8295 8736 8848 9305 9480 10270 10920 11060 11166 12324 12640 13027 13272 14378 14560 14888 15405 16432 16590 17696 18610 18960 20540 21567 21840 22120 22332 24193 24648 26054 26544 27915 28756 29776 30810 32864 33180 35945 37220 37920 39081 41080 43134 43680 44240 44664 48386 49296 52108 53088 55830 57512 59552 61620 65135 66360 71890 72579 74440 78162 82160 86268 88480 89328 96772 98592 104216 107835 111660 115024 120965 123240 130270 132720 143780 145158 147019 148880 156324 164320 169351 172536 178656 193544 195405 208432 215670 223320 230048 241930 246480 260540 265440 287560 290316 294038 297760 312648 338702 345072 362895 387088 390810 416864 431340 441057 446640 483860 492960 508053 521080 575120 580632 588076 625296 677404 690144 725790 735095 774176 781620 846755 862680 882114 893280 967720 1016106 1029133 1042160 1150240 1161264 1176152 1250592 1354808 1451580 1470190 1563240 1693510 1725360 1764228 1911247 1935440 2032212 2058266 2084320 2205285 2322528 2352304 2540265 2709616 2903160 2940380 3087399 3126480 3387020 3450720 3528456 3822494 3870880 4064424 4116532 4410570 4704608 5080530 5145665 5419232 5733741 5806320 5880760 6174798 6252960 6774040 7056912 7644988 8128848 8233064 8821140 9556235 10161060 10291330 11467482 11612640 11761520 12349596 13378729 13548080 14113824 15289976 15436995 16257696 16466128 17642280 19112470 20322120 20582660 22934964 23523040 24699192 26757458 27096160 28668705 30579952 30873990 32932256 35284560 38224940 40136187 40644240 41165320 45869928 49398384 53514916 57337410 61159904 61747980 66893645 70569120 76449880 80272374 81288480 82330640 91739856 98796768 107029832 114674820 123495960 133787290 152899760 160544748 164661280 183479712 200680935 214059664 229349640 246991920 267574580 305799520 321089496 401361870 428119328 458699280 493983840 535149160 642178992 802723740 917398560 1070298320 1284357984 1605447480 2140596640 3210894960 6421789920
- Sum of all divisors σ(n): 25225482240
- Sum of proper divisors (its aliquot sum) s(n): 18803692320
- 6421789920 is an abundant number, because the sum of its proper divisors (18803692320) is greater than itself. Its abundance is 12381902400
Bases of 6421789920
- Binary: 1011111101100010010111100111000002
- Hexadecimal: 0x17EC4BCE0
- Base-36: 2Y7D8TC
Squares and roots of 6421789920
- 6421789920 squared (64217899202) is 41239385776613606400
- 6421789920 cubed (64217899203) is 264830671887248629314367488000
-
The
square root of 6421789920 is 80136.0712787943 -
The
cube root of 6421789920 is 1858.7402268451
Scales and comparisons
How big is 6421789920?- 6,421,789,920 seconds is equal to 204 years, 10 weeks, 6 hours, 32 minutes.
-
To count from 1 to 6,421,789,920 would take you about four hundred 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 6421789920 cubic inches would be around 154.9 feet tall.
Recreational maths with 6421789920
- 6421789920 backwards is 0299871246
- 6421789920 is a
Harshad number . - The number of decimal digits it has is: 10
- The sum of 6421789920's digits is 48
- More coming soon!
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