21038538690
21,038,538,690 is an even composite number composed of seven prime numbers multiplied together.
What does the number 21038538690 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 288 divisors.
21038538690 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21038538690:
2 × 32 × 5 × 13 × 19 × 412 × 563
(2 × 3 × 3 × 5 × 13 × 19 × 41 × 41 × 563)See below for interesting mathematical facts about the number 21038538690 from the Numbermatics database.
Names of 21038538690
- Cardinal: 21038538690 can be written as Twenty-one billion, thirty-eight million, five hundred thirty-eight thousand, six hundred ninety.
Scientific notation
- Scientific notation: 2.103853869 × 1010
Factors of 21038538690
Divisors of 21038538690
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 5 6 9 10 13 15 18 19 26 30 38 39 41 45 57 65 78 82 90 95 114 117 123 130 171 190 195 205 234 246 247 285 342 369 390 410 494 533 563 570 585 615 738 741 779 855 1066 1126 1170 1230 1235 1482 1558 1599 1681 1689 1710 1845 2223 2337 2470 2665 2815 3198 3362 3378 3690 3705 3895 4446 4674 4797 5043 5067 5330 5630 7011 7319 7410 7790 7995 8405 8445 9594 10086 10127 10134 10697 11115 11685 14022 14638 15129 15990 16810 16890 20254 21394 21853 21957 22230 23083 23370 23985 25215 25335 30258 30381 31939 32091 35055 36595 43706 43914 46166 47970 50430 50635 50670 53485 60762 63878 64182 65559 65871 69249 70110 73190 75645 91143 95817 96273 101270 106970 109265 109785 115415 131118 131742 138498 139061 151290 151905 159695 160455 182286 191634 192546 196677 207747 218530 219570 230830 278122 287451 300079 303810 319390 320910 327795 329355 346245 393354 415207 415494 417183 438577 455715 479085 481365 574902 600158 655590 658710 692490 695305 830414 834366 877154 900237 911430 946403 958170 962730 983385 1038735 1245621 1251549 1315731 1390610 1437255 1500395 1800474 1892806 1966770 2076035 2077470 2085915 2192885 2491242 2503098 2631462 2700711 2839209 2874510 3000790 3736863 3947193 4152070 4171830 4385770 4501185 4732015 5401422 5678418 5701501 6228105 6257745 6578655 7473726 7894386 8517627 9002370 9464030 11403002 12303239 12456210 12515490 13157310 13503555 14196045 17035254 17104503 17981657 18684315 19735965 24606478 27007110 28392090 28507505 34209006 35963314 36909717 37368630 39471930 42588135 51313509 53944971 57015010 61516195 73819434 85176270 85522515 89908285 102627018 107889942 110729151 123032390 161834913 171045030 179816570 184548585 221458302 233761541 256567545 269724855 323669826 369097170 467523082 513135090 539449710 553645755 701284623 809174565 1107291510 1168807705 1402569246 1618349130 2103853869 2337615410 3506423115 4207707738 7012846230 10519269345 21038538690
- Sum of all divisors σ(n): 63670501440
- Sum of proper divisors (its aliquot sum) s(n): 42631962750
- 21038538690 is an abundant number, because the sum of its proper divisors (42631962750) is greater than itself. Its abundance is 21593424060
Bases of 21038538690
- Binary: 100111001011111111010011111110000102
- Hexadecimal: 0x4E5FE9FC2
- Base-36: 9NXSWCI
Squares and roots of 21038538690
- 21038538690 squared (210385386902) is 442620110210626916100
- 21038538690 cubed (210385386903) is 9312080313638338423525233909000
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The
square root of 21038538690 is 145046.6776248253 -
The
cube root of 21038538690 is 2760.6108485703
Scales and comparisons
How big is 21038538690?- 21,038,538,690 seconds is equal to 668 years, 49 weeks, 6 days, 14 hours, 31 minutes, 30 seconds.
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To count from 1 to 21,038,538,690 would take you about one thousand, three hundred thirty-seven 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 21038538690 cubic inches would be around 230.1 feet tall.
Recreational maths with 21038538690
- 21038538690 backwards is 09683583012
- 21038538690 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21038538690's digits is 45
- More coming soon!
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