21029697990
21,029,697,990 is an even composite number composed of seven prime numbers multiplied together.
21029697990 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 21029697990:
2 × 32 × 5 × 72 × 19 × 419 × 599
(2 × 3 × 3 × 5 × 7 × 7 × 19 × 419 × 599)See below for interesting mathematical facts about the number 21029697990 from the Numbermatics database.
Names of 21029697990
- Cardinal: 21029697990 can be written as Twenty-one billion, twenty-nine million, six hundred ninety-seven thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 2.102969799 × 1010
Factors of 21029697990
Divisors of 21029697990
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 5 6 7 9 10 14 15 18 19 21 30 35 38 42 45 49 57 63 70 90 95 98 105 114 126 133 147 171 190 210 245 266 285 294 315 342 399 419 441 490 570 599 630 665 735 798 838 855 882 931 1197 1198 1257 1330 1470 1710 1797 1862 1995 2095 2205 2394 2514 2793 2933 2995 3594 3771 3990 4190 4193 4410 4655 5391 5586 5866 5985 5990 6285 7542 7961 8379 8386 8799 8985 9310 10782 11381 11970 12570 12579 13965 14665 15922 16758 17598 17970 18855 20531 20965 22762 23883 25158 26397 26955 27930 29330 29351 34143 37710 37737 39805 41062 41895 41930 43995 47766 52794 53910 55727 56905 58702 61593 62895 68286 71649 75474 79610 79667 83790 87990 88053 102429 102655 111454 113810 119415 123186 125790 131985 143298 146755 159334 167181 170715 176106 184779 188685 204858 205310 238830 239001 250981 263970 264159 278635 293510 307965 334362 341430 358245 369558 377370 390089 398335 440265 478002 501543 501962 512145 528318 557270 557669 615930 716490 717003 752943 780178 796670 835905 880530 923895 1003086 1024290 1115338 1170267 1195005 1254905 1320795 1434006 1505886 1671810 1673007 1756867 1847790 1950445 2258829 2340534 2390010 2507715 2509810 2641590 2788345 3346014 3510801 3513734 3585015 3764715 3900890 4517658 4768639 5015430 5019021 5270601 5576690 5851335 7021602 7170030 7529430 8365035 8784335 9537278 10038042 10541202 11294145 11702670 12298069 14305917 15811803 16730070 17554005 17568670 22588290 23843195 24596138 25095105 26353005 28611834 31623606 33380473 35108010 36894207 42917751 47686390 50190210 52706010 61490345 66760946 71529585 73788414 79059015 85835502 100141419 110682621 122980690 143059170 158118030 166902365 184471035 200282838 214588755 221365242 233663311 300424257 333804730 368942070 429177510 467326622 500707095 553413105 600848514 700989933 1001414190 1106826210 1168316555 1401979866 1502121285 2102969799 2336633110 3004242570 3504949665 4205939598 7009899330 10514848995 21029697990
- Sum of all divisors σ(n): 67223520000
- Sum of proper divisors (its aliquot sum) s(n): 46193822010
- 21029697990 is an abundant number, because the sum of its proper divisors (46193822010) is greater than itself. Its abundance is 25164124020
Bases of 21029697990
- Binary: 100111001010111011110111001110001102
- Hexadecimal: 0x4E577B9C6
- Base-36: 9NSJETI
Squares and roots of 21029697990
- 21029697990 squared (210296979902) is 442248197550610040100
- 21029697990 cubed (210296979903) is 9300346031111186883564789399000
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The
square root of 21029697990 is 145016.1990606567 -
The
cube root of 21029697990 is 2760.2241114489
Scales and comparisons
How big is 21029697990?- 21,029,697,990 seconds is equal to 668 years, 35 weeks, 2 days, 6 hours, 46 minutes, 30 seconds.
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To count from 1 to 21,029,697,990 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 21029697990 cubic inches would be around 230 feet tall.
Recreational maths with 21029697990
- 21029697990 backwards is 09979692012
- The number of decimal digits it has is: 11
- The sum of 21029697990's digits is 54
- More coming soon!
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