21159540
21,159,540 is an even composite number composed of six prime numbers multiplied together.
21159540 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 21159540:
22 × 32 × 5 × 19 × 23 × 269
(2 × 2 × 3 × 3 × 5 × 19 × 23 × 269)See below for interesting mathematical facts about the number 21159540 from the Numbermatics database.
Names of 21159540
- Cardinal: 21159540 can be written as Twenty-one million, one hundred fifty-nine thousand, five hundred forty.
Scientific notation
- Scientific notation: 2.115954 × 107
Factors of 21159540
Divisors of 21159540
- Number of divisors d(n): 144
-
Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 19 20 23 30 36 38 45 46 57 60 69 76 90 92 95 114 115 138 171 180 190 207 228 230 269 276 285 342 345 380 414 437 460 538 570 684 690 807 828 855 874 1035 1076 1140 1311 1345 1380 1614 1710 1748 2070 2185 2421 2622 2690 3228 3420 3933 4035 4140 4370 4842 5111 5244 5380 6187 6555 7866 8070 8740 9684 10222 12105 12374 13110 15333 15732 16140 18561 19665 20444 24210 24748 25555 26220 30666 30935 37122 39330 45999 48420 51110 55683 61332 61870 74244 76665 78660 91998 92805 102220 111366 117553 123740 153330 183996 185610 222732 229995 235106 278415 306660 352659 371220 459990 470212 556830 587765 705318 919980 1057977 1113660 1175530 1410636 1763295 2115954 2351060 3526590 4231908 5289885 7053180 10579770 21159540
- Sum of all divisors σ(n): 70761600
- Sum of proper divisors (its aliquot sum) s(n): 49602060
- 21159540 is an abundant number, because the sum of its proper divisors (49602060) is greater than itself. Its abundance is 28442520
Bases of 21159540
- Binary: 10100001011011110011101002
- Hexadecimal: 0x142DE74
- Base-36: CLIT0
Squares and roots of 21159540
- 21159540 squared (211595402) is 447726133011600
- 21159540 cubed (211595403) is 9473679020504270664000
-
The
square root of 21159540 is 4599.9499997283 -
The
cube root of 21159540 is 276.5893204863
Scales and comparisons
How big is 21159540?- 21,159,540 seconds is equal to 34 weeks, 6 days, 21 hours, 39 minutes.
-
To count from 1 to 21,159,540 would take you about three days!
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 21159540 cubic inches would be around 23 feet tall.
Recreational maths with 21159540
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