21081328125
21,081,328,125 is an odd composite number composed of six prime numbers multiplied together.
21081328125 is an odd composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 21081328125:
3 × 57 × 11 × 13 × 17 × 37
(3 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 11 × 13 × 17 × 37)See below for interesting mathematical facts about the number 21081328125 from the Numbermatics database.
Names of 21081328125
- Cardinal: 21081328125 can be written as Twenty-one billion, eighty-one million, three hundred twenty-eight thousand, one hundred twenty-five.
Scientific notation
- Scientific notation: 2.1081328125 × 1010
Factors of 21081328125
Divisors of 21081328125
- Number of divisors d(n): 256
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Complete list of divisors:
1 3 5 11 13 15 17 25 33 37 39 51 55 65 75 85 111 125 143 165 185 187 195 221 255 275 325 375 407 425 429 481 555 561 625 629 663 715 825 925 935 975 1105 1221 1275 1375 1443 1625 1875 1887 2035 2125 2145 2405 2431 2775 2805 3125 3145 3315 3575 4125 4625 4675 4875 5291 5525 6105 6375 6875 6919 7215 7293 8125 8177 9375 9435 10175 10625 10725 12025 12155 13875 14025 15625 15725 15873 16575 17875 20625 20757 23125 23375 24375 24531 26455 27625 30525 31875 34375 34595 36075 36465 40625 40885 46875 47175 50875 53125 53625 60125 60775 69375 70125 78125 78625 79365 82875 89375 89947 103125 103785 115625 116875 121875 122655 132275 138125 152625 159375 171875 172975 180375 182325 203125 204425 234375 235875 254375 265625 268125 269841 300625 303875 346875 350625 393125 396825 414375 446875 449735 515625 518925 578125 584375 609375 613275 661375 690625 763125 796875 859375 864875 901875 911625 1015625 1022125 1179375 1271875 1328125 1340625 1349205 1503125 1519375 1734375 1753125 1965625 1984125 2071875 2234375 2248675 2578125 2594625 2890625 2921875 3046875 3066375 3306875 3453125 3815625 3984375 4324375 4509375 4558125 5110625 5896875 6359375 6703125 6746025 7515625 7596875 8671875 8765625 9828125 9920625 10359375 11171875 11243375 12973125 14609375 15331875 16534375 17265625 19078125 21621875 22546875 22790625 25553125 29484375 31796875 33515625 33730125 37578125 37984375 43828125 49140625 49603125 51796875 56216875 64865625 76659375 82671875 95390625 108109375 112734375 113953125 127765625 147421875 168650625 189921875 248015625 281084375 324328125 383296875 413359375 540546875 569765625 638828125 843253125 1240078125 1405421875 1621640625 1916484375 4216265625 7027109375 21081328125
- Sum of all divisors σ(n): 44887385088
- Sum of proper divisors (its aliquot sum) s(n): 23806056963
- 21081328125 is an abundant number, because the sum of its proper divisors (23806056963) is greater than itself. Its abundance is 2724728838
Bases of 21081328125
- Binary: 100111010001000101110001001111111012
- Hexadecimal: 0x4E88B89FD
- Base-36: 9ONA0VX
Squares and roots of 21081328125
- 21081328125 squared (210813281252) is 444422395513916015625
- 21081328125 cubed (210813281253) is 9369014345927391529083251953125
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The
square root of 21081328125 is 145194.1049939701 -
The
cube root of 21081328125 is 2762.4811461761
Scales and comparisons
How big is 21081328125?- 21,081,328,125 seconds is equal to 670 years, 16 weeks, 4 days, 20 hours, 28 minutes, 45 seconds.
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To count from 1 to 21,081,328,125 would take you about one thousand, three hundred forty 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 21081328125 cubic inches would be around 230.2 feet tall.
Recreational maths with 21081328125
- 21081328125 backwards is 52182318012
- 21081328125 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21081328125's digits is 33
- More coming soon!
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