21681812672
21,681,812,672 is an even composite number composed of five prime numbers multiplied together.
21681812672 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 21681812672:
26 × 13 × 31 × 61 × 13781
(2 × 2 × 2 × 2 × 2 × 2 × 13 × 31 × 61 × 13781)See below for interesting mathematical facts about the number 21681812672 from the Numbermatics database.
Names of 21681812672
- Cardinal: 21681812672 can be written as Twenty-one billion, six hundred eighty-one million, eight hundred twelve thousand, six hundred seventy-two.
Scientific notation
- Scientific notation: 2.1681812672 × 1010
Factors of 21681812672
Divisors of 21681812672
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 8 13 16 26 31 32 52 61 62 64 104 122 124 208 244 248 403 416 488 496 793 806 832 976 992 1586 1612 1891 1952 1984 3172 3224 3782 3904 6344 6448 7564 12688 12896 13781 15128 24583 25376 25792 27562 30256 49166 50752 55124 60512 98332 110248 121024 179153 196664 220496 358306 393328 427211 440992 716612 786656 840641 854422 881984 1433224 1573312 1681282 1708844 2866448 3362564 3417688 5553743 5732896 6725128 6835376 10928333 11107486 11465792 13450256 13670752 21856666 22214972 26059871 26900512 27341504 43713332 44429944 52119742 53801024 87426664 88859888 104239484 174853328 177719776 208478968 338778323 349706656 355439552 416957936 677556646 699413312 833915872 1355113292 1667831744 2710226584 5420453168 10840906336 21681812672
- Sum of all divisors σ(n): 48616721664
- Sum of proper divisors (its aliquot sum) s(n): 26934908992
- 21681812672 is an abundant number, because the sum of its proper divisors (26934908992) is greater than itself. Its abundance is 5253096320
Bases of 21681812672
- Binary: 101000011000101011000110100110000002
- Hexadecimal: 0x50C5634C0
- Base-36: 9YKSHQ8
Squares and roots of 21681812672
- 21681812672 squared (216818126722) is 470101000743699779584
- 21681812672 cubed (216818126723) is 10192641835044631305147978088448
-
The
square root of 21681812672 is 147247.4538727241 -
The
cube root of 21681812672 is 2788.4649886187
Scales and comparisons
How big is 21681812672?- 21,681,812,672 seconds is equal to 689 years, 21 weeks, 3 days, 21 hours, 44 minutes, 32 seconds.
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To count from 1 to 21,681,812,672 would take you about one thousand, three hundred seventy-eight 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 21681812672 cubic inches would be around 232.4 feet tall.
Recreational maths with 21681812672
- 21681812672 backwards is 27621818612
- The number of decimal digits it has is: 11
- The sum of 21681812672's digits is 44
- More coming soon!
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