20721379328
20,721,379,328 is an even composite number composed of five prime numbers multiplied together.
20721379328 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 20721379328:
211 × 132 × 19 × 23 × 137
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 13 × 13 × 19 × 23 × 137)See below for interesting mathematical facts about the number 20721379328 from the Numbermatics database.
Names of 20721379328
- Cardinal: 20721379328 can be written as Twenty billion, seven hundred twenty-one million, three hundred seventy-nine thousand, three hundred twenty-eight.
Scientific notation
- Scientific notation: 2.0721379328 × 1010
Factors of 20721379328
Divisors of 20721379328
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 8 13 16 19 23 26 32 38 46 52 64 76 92 104 128 137 152 169 184 208 247 256 274 299 304 338 368 416 437 494 512 548 598 608 676 736 832 874 988 1024 1096 1196 1216 1352 1472 1664 1748 1781 1976 2048 2192 2392 2432 2603 2704 2944 3151 3211 3328 3496 3562 3887 3952 4384 4784 4864 5206 5408 5681 5888 6302 6422 6656 6992 7124 7774 7904 8768 9568 9728 10412 10816 11362 11776 12604 12844 13312 13984 14248 15548 15808 17536 19136 19456 20824 21632 22724 23153 23552 25208 25688 26624 27968 28496 31096 31616 33839 35072 38272 38912 40963 41648 43264 45448 46306 47104 50416 51376 55936 56992 59869 62192 63232 67678 70144 73853 76544 81926 83296 86528 90896 92612 100832 102752 111872 113984 119738 124384 126464 135356 140288 147706 153088 163852 166592 173056 181792 185224 201664 205504 223744 227968 239476 248768 252928 270712 280576 295412 306176 327704 333184 346112 363584 370448 403328 411008 439907 447488 455936 478952 497536 505856 532519 541424 590824 612352 655408 666368 727168 740896 778297 806656 822016 879814 894976 911872 957904 995072 1065038 1082848 1181648 1310816 1332736 1454336 1481792 1556594 1613312 1644032 1759628 1823744 1915808 1990144 2130076 2165696 2363296 2621632 2665472 2908672 2963584 3113188 3226624 3288064 3519256 3647488 3831616 3980288 4260152 4331392 4726592 5243264 5330944 5817344 5927168 6226376 6453248 6576128 7038512 7663232 7960576 8520304 8662784 9453184 10117861 10486528 11634688 11854336 12452752 14077024 15326464 17040608 17325568 18906368 20235722 20973056 23708672 24905504 28154048 30652928 34081216 34651136 37812736 40471444 41946112 47417344 49811008 56308096 61305856 68162432 69302272 75625472 80942888 83892224 99622016 112616192 122611712 136324864 151250944 161885776 199244032 225232384 272649728 323771552 398488064 450464768 545299456 647543104 796976128 900929536 1090598912 1295086208 1593952256 2590172416 5180344832 10360689664 20721379328
- Sum of all divisors σ(n): 49639262400
- Sum of proper divisors (its aliquot sum) s(n): 28917883072
- 20721379328 is an abundant number, because the sum of its proper divisors (28917883072) is greater than itself. Its abundance is 8196503744
Bases of 20721379328
- Binary: 100110100110001011100101000000000002
- Hexadecimal: 0x4D3172800
- Base-36: 9IOZ2M8
Squares and roots of 20721379328
- 20721379328 squared (207213793282) is 429375561254865731584
- 20721379328 cubed (207213793283) is 8897253878934972509860294295552
-
The
square root of 20721379328 is 143949.2248259779 -
The
cube root of 20721379328 is 2746.6683323373
Scales and comparisons
How big is 20721379328?- 20,721,379,328 seconds is equal to 658 years, 45 weeks, 3 days, 18 hours, 42 minutes, 8 seconds.
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To count from 1 to 20,721,379,328 would take you about one thousand, three hundred seventeen 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 20721379328 cubic inches would be around 228.9 feet tall.
Recreational maths with 20721379328
- 20721379328 backwards is 82397312702
- The number of decimal digits it has is: 11
- The sum of 20721379328's digits is 44
- More coming soon!
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