21318397440
21,318,397,440 is an even composite number composed of six prime numbers multiplied together.
21318397440 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21318397440:
29 × 3 × 5 × 31 × 151 × 593
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 31 × 151 × 593)See below for interesting mathematical facts about the number 21318397440 from the Numbermatics database.
Names of 21318397440
- Cardinal: 21318397440 can be written as Twenty-one billion, three hundred eighteen million, three hundred ninety-seven thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.131839744 × 1010
Factors of 21318397440
Divisors of 21318397440
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 64 80 93 96 120 124 128 151 155 160 186 192 240 248 256 302 310 320 372 384 453 465 480 496 512 593 604 620 640 744 755 768 906 930 960 992 1186 1208 1240 1280 1488 1510 1536 1779 1812 1860 1920 1984 2265 2372 2416 2480 2560 2965 2976 3020 3558 3624 3720 3840 3968 4530 4681 4744 4832 4960 5930 5952 6040 7116 7248 7440 7680 7936 8895 9060 9362 9488 9664 9920 11860 11904 12080 14043 14232 14496 14880 15872 17790 18120 18383 18724 18976 19328 19840 23405 23720 23808 24160 28086 28464 28992 29760 35580 36240 36766 37448 37952 38656 39680 46810 47440 47616 48320 55149 56172 56928 57984 59520 70215 71160 72480 73532 74896 75904 77312 79360 89543 91915 93620 94880 96640 110298 112344 113856 115968 119040 140430 142320 144960 147064 149792 151808 179086 183830 187240 189760 193280 220596 224688 227712 231936 238080 268629 275745 280860 284640 289920 294128 299584 303616 358172 367660 374480 379520 386560 441192 447715 449376 455424 537258 551490 561720 569280 579840 588256 599168 716344 735320 748960 759040 882384 895430 898752 910848 1074516 1102980 1123440 1138560 1159680 1176512 1198336 1343145 1432688 1470640 1497920 1518080 1764768 1790860 1797504 2149032 2205960 2246880 2277120 2353024 2396672 2686290 2775833 2865376 2941280 2995840 3529536 3581720 3595008 4298064 4411920 4493760 4554240 4706048 5372580 5551666 5730752 5882560 5991680 7059072 7163440 7190016 8327499 8596128 8823840 8987520 9412096 10745160 11103332 11461504 11765120 11983360 13879165 14118144 14326880 16654998 17192256 17647680 17975040 21490320 22206664 22923008 23530240 27758330 28236288 28653760 33309996 34384512 35295360 35950080 41637495 42980640 44413328 45846016 47060480 55516660 57307520 66619992 68769024 70590720 83274990 85961280 88826656 111033320 114615040 133239984 137538048 141181440 166549980 171922560 177653312 222066640 229230080 266479968 333099960 343845120 355306624 444133280 532959936 666199920 687690240 710613248 888266560 1065919872 1332399840 1421226496 1776533120 2131839744 2664799680 3553066240 4263679488 5329599360 7106132480 10659198720 21318397440
- Sum of all divisors σ(n): 70936031232
- Sum of proper divisors (its aliquot sum) s(n): 49617633792
- 21318397440 is an abundant number, because the sum of its proper divisors (49617633792) is greater than itself. Its abundance is 28299236352
Bases of 21318397440
- Binary: 100111101101010110011101110000000002
- Hexadecimal: 0x4F6ACEE00
- Base-36: 9SKF8QO
Squares and roots of 21318397440
- 21318397440 squared (213183974402) is 454474069409798553600
- 21318397440 cubed (213183974403) is 9688658837852231795981942784000
-
The
square root of 21318397440 is 146008.2101801129 -
The
cube root of 21318397440 is 2772.7976981661
Scales and comparisons
How big is 21318397440?- 21,318,397,440 seconds is equal to 677 years, 44 weeks, 4 days, 17 hours, 4 minutes.
-
To count from 1 to 21,318,397,440 would take you about one thousand, three hundred fifty-five 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 21318397440 cubic inches would be around 231.1 feet tall.
Recreational maths with 21318397440
- 21318397440 backwards is 04479381312
- The number of decimal digits it has is: 11
- The sum of 21318397440's digits is 42
- More coming soon!
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