21489128948
21,489,128,948 is an even composite number composed of six prime numbers multiplied together.
21489128948 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21489128948:
22 × 72 × 31 × 71 × 109 × 457
(2 × 2 × 7 × 7 × 31 × 71 × 109 × 457)See below for interesting mathematical facts about the number 21489128948 from the Numbermatics database.
Names of 21489128948
- Cardinal: 21489128948 can be written as Twenty-one billion, four hundred eighty-nine million, one hundred twenty-eight thousand, nine hundred forty-eight.
Scientific notation
- Scientific notation: 2.1489128948 × 1010
Factors of 21489128948
Divisors of 21489128948
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 4 7 14 28 31 49 62 71 98 109 124 142 196 217 218 284 434 436 457 497 763 868 914 994 1519 1526 1828 1988 2201 3038 3052 3199 3379 3479 4402 5341 6076 6398 6758 6958 7739 8804 10682 12796 13516 13916 14167 15407 15478 21364 22393 23653 28334 30814 30956 32447 44786 47306 49813 54173 56668 61628 64894 89572 94612 99169 99626 107849 108346 129788 165571 198338 199252 215698 216692 227129 239909 331142 348691 379211 396676 431396 454258 479818 662284 694183 697382 758422 908516 959636 1005857 1388366 1394764 1516844 1544203 1589903 1679363 2011714 2440837 2776732 3088406 3179806 3358726 3536723 4023428 4881674 6176812 6359612 6717452 7040999 7073446 9763348 10809421 11755541 14081998 14146892 21618842 23511082 24757061 28163996 43237684 47022164 49286993 49514122 75665947 98573986 99028244 109638413 151331894 173299427 197147972 219276826 302663788 346598854 438553652 693197708 767468891 1534937782 3069875564 5372282237 10744564474 21489128948
- Sum of all divisors σ(n): 46314132480
- Sum of proper divisors (its aliquot sum) s(n): 24825003532
- 21489128948 is an abundant number, because the sum of its proper divisors (24825003532) is greater than itself. Its abundance is 3335874584
Bases of 21489128948
- Binary: 101000000001101101000010101111101002
- Hexadecimal: 0x500DA15F4
- Base-36: 9VE2M0K
Squares and roots of 21489128948
- 21489128948 squared (214891289482) is 461782662943771586704
- 21489128948 cubed (214891289483) is 9923307189949528900140818307392
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The
square root of 21489128948 is 146591.7083193999 -
The
cube root of 21489128948 is 2780.1801441155
Scales and comparisons
How big is 21489128948?- 21,489,128,948 seconds is equal to 683 years, 14 weeks, 6 days, 18 hours, 29 minutes, 8 seconds.
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To count from 1 to 21,489,128,948 would take you about one thousand, three hundred sixty-six 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 21489128948 cubic inches would be around 231.7 feet tall.
Recreational maths with 21489128948
- 21489128948 backwards is 84982198412
- The number of decimal digits it has is: 11
- The sum of 21489128948's digits is 56
- More coming soon!
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