21731956740
21,731,956,740 is an even composite number composed of six prime numbers multiplied together.
21731956740 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 21731956740:
22 × 32 × 5 × 132 × 79 × 9043
(2 × 2 × 3 × 3 × 5 × 13 × 13 × 79 × 9043)See below for interesting mathematical facts about the number 21731956740 from the Numbermatics database.
Names of 21731956740
- Cardinal: 21731956740 can be written as Twenty-one billion, seven hundred thirty-one million, nine hundred fifty-six thousand, seven hundred forty.
Scientific notation
- Scientific notation: 2.173195674 × 1010
Factors of 21731956740
Divisors of 21731956740
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 45 52 60 65 78 79 90 117 130 156 158 169 180 195 234 237 260 316 338 390 395 468 474 507 585 676 711 780 790 845 948 1014 1027 1170 1185 1422 1521 1580 1690 2028 2054 2340 2370 2535 2844 3042 3081 3380 3555 4108 4740 5070 5135 6084 6162 7110 7605 9043 9243 10140 10270 12324 13351 14220 15210 15405 18086 18486 20540 26702 27129 30420 30810 36172 36972 40053 45215 46215 53404 54258 61620 66755 80106 81387 90430 92430 108516 117559 120159 133510 135645 160212 162774 180860 184860 200265 235118 240318 267020 271290 325548 352677 400530 406935 470236 480636 542580 587795 600795 705354 714397 801060 813870 1058031 1175590 1201590 1410708 1428794 1528267 1627740 1763385 2116062 2143191 2351180 2403180 2857588 3056534 3526770 3571985 4232124 4286382 4584801 5290155 6113068 6429573 7053540 7143970 7641335 8572764 9169602 9287161 10580310 10715955 12859146 13754403 14287940 15282670 18339204 18574322 21160620 21431910 22924005 25718292 27508806 27861483 30565340 32147865 37148644 42863820 45848010 46435805 55017612 55722966 64295730 68772015 83584449 91696020 92871610 111445932 120733093 128591460 137544030 139307415 167168898 185743220 241466186 275088060 278614830 334337796 362199279 417922245 482932372 557229660 603665465 724398558 835844490 1086597837 1207330930 1448797116 1671688980 1810996395 2173195674 2414661860 3621992790 4346391348 5432989185 7243985580 10865978370 21731956740
- Sum of all divisors σ(n): 72292671360
- Sum of proper divisors (its aliquot sum) s(n): 50560714620
- 21731956740 is an abundant number, because the sum of its proper divisors (50560714620) is greater than itself. Its abundance is 28828757880
Bases of 21731956740
- Binary: 101000011110101001101011000000001002
- Hexadecimal: 0x50F535804
- Base-36: 9ZEN950
Squares and roots of 21731956740
- 21731956740 squared (217319567402) is 472277943749231427600
- 21731956740 cubed (217319567403) is 10263523842814450792851642024000
-
The
square root of 21731956740 is 147417.6269650275 -
The
cube root of 21731956740 is 2790.6129843633
Scales and comparisons
How big is 21731956740?- 21,731,956,740 seconds is equal to 691 years, 3 days, 6 hours, 39 minutes.
-
To count from 1 to 21,731,956,740 would take you about one thousand, three hundred eighty-two 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 21731956740 cubic inches would be around 232.6 feet tall.
Recreational maths with 21731956740
- 21731956740 backwards is 04765913712
- 21731956740 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21731956740's digits is 45
- More coming soon!
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