21004984
21,004,984 is an even composite number composed of six prime numbers multiplied together.
21004984 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21004984:
23 × 7 × 11 × 13 × 43 × 61
(2 × 2 × 2 × 7 × 11 × 13 × 43 × 61)See below for interesting mathematical facts about the number 21004984 from the Numbermatics database.
Names of 21004984
- Cardinal: 21004984 can be written as Twenty-one million, four thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 2.1004984 × 107
Factors of 21004984
Divisors of 21004984
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 4 7 8 11 13 14 22 26 28 43 44 52 56 61 77 86 88 91 104 122 143 154 172 182 244 286 301 308 344 364 427 473 488 559 572 602 616 671 728 793 854 946 1001 1118 1144 1204 1342 1586 1708 1892 2002 2236 2408 2623 2684 3172 3311 3416 3784 3913 4004 4472 4697 5246 5368 5551 6149 6344 6622 7826 8008 8723 9394 10492 11102 12298 13244 15652 17446 18361 18788 20984 22204 24596 26488 28853 31304 34099 34892 36722 37576 43043 44408 49192 57706 61061 68198 69784 73444 86086 115412 122122 136396 146888 172172 201971 230824 238693 244244 272792 344344 375089 403942 477386 488488 750178 807884 954772 1500356 1615768 1909544 2625623 3000712 5251246 10502492 21004984
- Sum of all divisors σ(n): 54996480
- Sum of proper divisors (its aliquot sum) s(n): 33991496
- 21004984 is an abundant number, because the sum of its proper divisors (33991496) is greater than itself. Its abundance is 12986512
Bases of 21004984
- Binary: 10100000010000010101110002
- Hexadecimal: 0x14082B8
- Base-36: CI7JS
Squares and roots of 21004984
- 21004984 squared (210049842) is 441209352840256
- 21004984 cubed (210049843) is 9267595397059931835904
-
The
square root of 21004984 is 4583.1194616767 -
The
cube root of 21004984 is 275.9142420673
Scales and comparisons
How big is 21004984?- 21,004,984 seconds is equal to 34 weeks, 5 days, 2 hours, 43 minutes, 4 seconds.
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To count from 1 to 21,004,984 would take you about sixteen hours!
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 21004984 cubic inches would be around 23 feet tall.
Recreational maths with 21004984
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