21989957990
21,989,957,990 is an even composite number composed of eight prime numbers multiplied together.
21989957990 is an even composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21989957990:
2 × 5 × 7 × 112 × 13 × 19 × 23 × 457
(2 × 5 × 7 × 11 × 11 × 13 × 19 × 23 × 457)See below for interesting mathematical facts about the number 21989957990 from the Numbermatics database.
Names of 21989957990
- Cardinal: 21989957990 can be written as Twenty-one billion, nine hundred eighty-nine million, nine hundred fifty-seven thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 2.198995799 × 1010
Factors of 21989957990
Divisors of 21989957990
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 5 7 10 11 13 14 19 22 23 26 35 38 46 55 65 70 77 91 95 110 115 121 130 133 143 154 161 182 190 209 230 242 247 253 266 286 299 322 385 418 437 455 457 494 506 598 605 665 715 770 805 847 874 910 914 1001 1045 1210 1235 1265 1330 1430 1463 1495 1573 1610 1694 1729 1771 2002 2090 2093 2185 2285 2299 2470 2530 2717 2783 2926 2990 3059 3146 3199 3289 3458 3542 4186 4235 4370 4570 4598 4807 5005 5027 5434 5566 5681 5941 6118 6398 6578 7315 7865 8470 8645 8683 8855 9614 10010 10054 10465 10511 11011 11362 11495 11882 13585 13915 14630 15295 15730 15995 16093 16445 17290 17366 17710 19019 19481 20930 21022 22022 22990 23023 24035 25135 27170 27830 28405 29705 29887 30590 31990 32186 32890 33649 35189 36179 38038 38962 39767 41587 43415 46046 48070 50270 52555 52877 55055 55297 56810 59410 59774 60781 62491 65351 67298 70378 72358 73577 79534 80465 83174 86830 95095 95513 97405 105110 105754 110110 110594 112879 115115 115621 121562 124982 130702 136643 147154 149435 160930 168245 175945 180895 190190 191026 194810 198835 199709 207935 209209 225758 230230 231242 253253 264385 273286 276485 298870 303905 312455 326755 336490 351890 361790 367885 370139 387079 397670 399418 415870 418418 437437 457457 477565 506506 528770 552970 564395 578105 607810 624910 653510 668591 683215 687401 718861 735770 740278 774158 790153 809347 874874 914914 955130 956501 998545 1046045 1050643 1128790 1156210 1241669 1266265 1271831 1337182 1366430 1374802 1397963 1437722 1503073 1580306 1618694 1850695 1913002 1935395 1997090 2092090 2101286 2187185 2196799 2287285 2483338 2532530 2543662 2596217 2795926 3006146 3342955 3437005 3594305 3701390 3870790 3950765 4046735 4374370 4393598 4574570 4782505 4811807 5032027 5192434 5253215 6208345 6359155 6685910 6874010 6989815 7188610 7354501 7515365 7901530 8093470 8691683 8902817 9565010 9623614 10064054 10506430 10521511 10983995 12416690 12718310 12981085 13658359 13979630 14709002 15030730 15377593 16533803 17383366 17805634 18173519 21043022 21967990 24059035 24164789 25160135 25962170 27316718 28558387 30755186 33067606 36347038 36772505 43458415 44514085 48118070 48329578 50320270 52607555 57116774 68291795 73545010 76887965 82669015 86916830 89028170 90867595 95608513 105215110 115736621 120823945 136583590 142791935 153775930 165338030 169153523 181735190 191217026 199908709 231473242 241647890 285583870 314142257 338307046 399817418 478042565 578683105 628284514 845767615 956085130 999543545 1157366210 1570711285 1691535230 1999087090 2198995799 3141422570 4397991598 10994978995 21989957990
- Sum of all divisors σ(n): 58945259520
- Sum of proper divisors (its aliquot sum) s(n): 36955301530
- 21989957990 is an abundant number, because the sum of its proper divisors (36955301530) is greater than itself. Its abundance is 14965343540
Bases of 21989957990
- Binary: 101000111101011010000100001011001102
- Hexadecimal: 0x51EB42166
- Base-36: A3O946E
Squares and roots of 21989957990
- 21989957990 squared (219899579902) is 483558252401964840100
- 21989957990 cubed (219899579903) is 10633425656037023427256067399000
-
The
square root of 21989957990 is 148290.1142692931 -
The
cube root of 21989957990 is 2801.6129308171
Scales and comparisons
How big is 21989957990?- 21,989,957,990 seconds is equal to 699 years, 11 weeks, 9 hours, 39 minutes, 50 seconds.
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To count from 1 to 21,989,957,990 would take you about one thousand, three hundred ninety-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 21989957990 cubic inches would be around 233.5 feet tall.
Recreational maths with 21989957990
- 21989957990 backwards is 09975998912
- The number of decimal digits it has is: 11
- The sum of 21989957990's digits is 68
- More coming soon!
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