81440004240
81,440,004,240 is an even composite number composed of six prime numbers multiplied together.
81440004240 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 81440004240:
24 × 32 × 5 × 7 × 3169 × 5099
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 3169 × 5099)See below for interesting mathematical facts about the number 81440004240 from the Numbermatics database.
Names of 81440004240
- Cardinal: 81440004240 can be written as Eighty-one billion, four hundred forty million, four thousand, two hundred forty.
Scientific notation
- Scientific notation: 8.144000424 × 1010
Factors of 81440004240
Divisors of 81440004240
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 35 36 40 42 45 48 56 60 63 70 72 80 84 90 105 112 120 126 140 144 168 180 210 240 252 280 315 336 360 420 504 560 630 720 840 1008 1260 1680 2520 3169 5040 5099 6338 9507 10198 12676 15297 15845 19014 20396 22183 25352 25495 28521 30594 31690 35693 38028 40792 44366 45891 47535 50704 50990 57042 61188 63380 66549 71386 76056 76485 81584 88732 91782 95070 101980 107079 110915 114084 122376 126760 133098 142605 142772 152112 152970 177464 178465 183564 190140 199647 203960 214158 221830 228168 229455 244752 253520 266196 285210 285544 305940 321237 332745 354928 356930 367128 380280 399294 407920 428316 443660 456336 458910 532392 535395 570420 571088 611880 642474 665490 713860 734256 760560 798588 856632 887320 917820 998235 1064784 1070790 1140840 1223760 1284948 1330980 1427720 1597176 1606185 1713264 1774640 1835640 1996470 2141580 2281680 2569896 2661960 2855440 3194352 3212370 3671280 3992940 4283160 5139792 5323920 6424740 7985880 8566320 12849480 15971760 16158731 25698960 32317462 48476193 64634924 80793655 96952386 113111117 129269848 145428579 161587310 193904772 226222234 242380965 258539696 290857158 323174620 339333351 387809544 452444468 484761930 565555585 581714316 646349240 678666702 727142895 775619088 904888936 969523860 1018000053 1131111170 1163428632 1292698480 1357333404 1454285790 1696666755 1809777872 1939047720 2036000106 2262222340 2326857264 2714666808 2908571580 3393333510 3878095440 4072000212 4524444680 5090000265 5429333616 5817143160 6786667020 8144000424 9048889360 10180000530 11634286320 13573334040 16288000848 20360001060 27146668080 40720002120 81440004240
- Sum of all divisors σ(n): 312734448000
- Sum of proper divisors (its aliquot sum) s(n): 231294443760
- 81440004240 is an abundant number, because the sum of its proper divisors (231294443760) is greater than itself. Its abundance is 149854439520
Bases of 81440004240
- Binary: 10010111101100011001111011000100100002
- Hexadecimal: 0x12F633D890
- Base-36: 11EV9XG0
Squares and roots of 81440004240
- 81440004240 squared (814400042402) is 6632474290611217977600
- 81440004240 cubed (814400042403) is 540148734349068584287308225024000
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The
square root of 81440004240 is 285376.9511365625 -
The
cube root of 81440004240 is 4334.5690850907
Scales and comparisons
How big is 81440004240?- 81,440,004,240 seconds is equal to 2,589 years, 28 weeks, 15 hours, 24 minutes.
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To count from 1 to 81,440,004,240 would take you about five thousand, one hundred seventy-nine 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 81440004240 cubic inches would be around 361.2 feet tall.
Recreational maths with 81440004240
- 81440004240 backwards is 04240004418
- The number of decimal digits it has is: 11
- The sum of 81440004240's digits is 27
- More coming soon!
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Numbermatics. (2024). Number 81440004240 - Facts about the integer. Retrieved 22 September 2024, from https://numbermatics.com/n/81440004240/
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