21007809420
21,007,809,420 is an even composite number composed of seven prime numbers multiplied together.
21007809420 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21007809420:
22 × 3 × 5 × 13 × 19 × 439 × 3229
(2 × 2 × 3 × 5 × 13 × 19 × 439 × 3229)See below for interesting mathematical facts about the number 21007809420 from the Numbermatics database.
Names of 21007809420
- Cardinal: 21007809420 can be written as Twenty-one billion, seven million, eight hundred nine thousand, four hundred twenty.
Scientific notation
- Scientific notation: 2.100780942 × 1010
Factors of 21007809420
Divisors of 21007809420
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 4 5 6 10 12 13 15 19 20 26 30 38 39 52 57 60 65 76 78 95 114 130 156 190 195 228 247 260 285 380 390 439 494 570 741 780 878 988 1140 1235 1317 1482 1756 2195 2470 2634 2964 3229 3705 4390 4940 5268 5707 6458 6585 7410 8341 8780 9687 11414 12916 13170 14820 16145 16682 17121 19374 22828 25023 26340 28535 32290 33364 34242 38748 41705 41977 48435 50046 57070 61351 64580 68484 83410 83954 85605 96870 100092 108433 114140 122702 125115 125931 166820 167908 171210 184053 193740 209885 216866 245404 250230 251862 306755 325299 342420 368106 419770 433732 500460 503724 542165 613510 629655 650598 736212 797563 839540 920265 1084330 1227020 1259310 1301196 1417531 1595126 1626495 1840530 2168660 2392689 2518620 2835062 3190252 3252990 3681060 3987815 4252593 4785378 5670124 6505980 7087655 7975630 8505186 9570756 11963445 14175310 15951260 17010372 18427903 21262965 23926890 26933089 28350620 36855806 42525930 47853780 53866178 55283709 73711612 80799267 85051860 92139515 107732356 110567418 134665445 161598534 184279030 221134836 269330890 276418545 323197068 350130157 368558060 403996335 538661780 552837090 700260314 807992670 1050390471 1105674180 1400520628 1615985340 1750650785 2100780942 3501301570 4201561884 5251952355 7002603140 10503904710 21007809420
- Sum of all divisors σ(n): 66853248000
- Sum of proper divisors (its aliquot sum) s(n): 45845438580
- 21007809420 is an abundant number, because the sum of its proper divisors (45845438580) is greater than itself. Its abundance is 24837629160
Bases of 21007809420
- Binary: 100111001000010100110111011100011002
- Hexadecimal: 0x4E429BB8C
- Base-36: 9NFI9HO
Squares and roots of 21007809420
- 21007809420 squared (210078094202) is 441328056627040736400
- 21007809420 cubed (210078094203) is 9271335705319839808867656888000
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The
square root of 21007809420 is 144940.7100161993 -
The
cube root of 21007809420 is 2759.2661276101
Scales and comparisons
How big is 21007809420?- 21,007,809,420 seconds is equal to 667 years, 51 weeks, 22 hours, 37 minutes.
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To count from 1 to 21,007,809,420 would take you about one thousand, three hundred thirty-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 21007809420 cubic inches would be around 229.9 feet tall.
Recreational maths with 21007809420
- 21007809420 backwards is 02490870012
- The number of decimal digits it has is: 11
- The sum of 21007809420's digits is 33
- More coming soon!
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