7128505428
7,128,505,428 is an even composite number composed of seven prime numbers multiplied together.
7128505428 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 7128505428:
22 × 3 × 112 × 29 × 31 × 43 × 127
(2 × 2 × 3 × 11 × 11 × 29 × 31 × 43 × 127)See below for interesting mathematical facts about the number 7128505428 from the Numbermatics database.
Names of 7128505428
- Cardinal: 7128505428 can be written as Seven billion, one hundred twenty-eight million, five hundred five thousand, four hundred twenty-eight.
Scientific notation
- Scientific notation: 7.128505428 × 109
Factors of 7128505428
Divisors of 7128505428
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 6 11 12 22 29 31 33 43 44 58 62 66 86 87 93 116 121 124 127 129 132 172 174 186 242 254 258 319 341 348 363 372 381 473 484 508 516 638 682 726 762 899 946 957 1023 1247 1276 1333 1364 1397 1419 1452 1524 1798 1892 1914 2046 2494 2666 2697 2794 2838 3509 3596 3683 3741 3751 3828 3937 3999 4092 4191 4988 5203 5332 5394 5461 5588 5676 7018 7366 7482 7502 7874 7998 8382 9889 10406 10527 10788 10922 11049 11253 11811 13717 14036 14663 14732 14964 15004 15367 15609 15748 15996 16383 16764 19778 20812 21054 21844 22098 22506 23622 27434 29326 29667 30734 31218 32766 38657 39556 40513 41151 42108 43307 43989 44196 45012 46101 47244 54868 58652 59334 60071 61468 62436 65532 77314 81026 82302 86614 87978 92202 108779 114173 115971 118668 120142 121539 129921 150887 154628 158369 161293 162052 164604 169291 173228 175956 180213 184404 217558 228346 231942 240284 243078 259842 301774 316738 322586 326337 338582 342519 360426 425227 435116 445643 452661 456692 463884 475107 476377 483879 486156 507873 519684 603548 633476 645172 652674 660781 677164 685038 720852 850454 891286 905322 950214 952754 967758 1015746 1255903 1275681 1305348 1321562 1336929 1370076 1429131 1700908 1742059 1782572 1810644 1862201 1900428 1905508 1935516 1982343 2031492 2511806 2551362 2643124 2673858 2858262 3484118 3724402 3767709 3964686 4677497 4909439 5023612 5102724 5226177 5347716 5586603 5716524 6968236 7448804 7535418 7929372 9354994 9818878 10452354 11173206 13814933 14032491 14728317 15070836 18709988 19162649 19637756 20484211 20904708 22346412 27629866 28064982 29456634 38325298 40968422 41444799 54003829 55259732 56129964 57487947 58913268 61452633 76650596 81936844 82889598 108007658 114975894 122905266 162011487 165779196 216015316 229951788 245810532 324022974 594042119 648045948 1188084238 1782126357 2376168476 3564252714 7128505428
- Sum of all divisors σ(n): 20134625280
- Sum of proper divisors (its aliquot sum) s(n): 13006119852
- 7128505428 is an abundant number, because the sum of its proper divisors (13006119852) is greater than itself. Its abundance is 5877614424
Bases of 7128505428
- Binary: 1101010001110010001011100010101002
- Hexadecimal: 0x1A8E45C54
- Base-36: 39W4LZO
Squares and roots of 7128505428
- 7128505428 squared (71285054282) is 50815589637025463184
- 7128505428 cubed (71285054283) is 362239206554556564081358162752
-
The
square root of 7128505428 is 84430.4768907531 -
The
cube root of 7128505428 is 1924.5660845111
Scales and comparisons
How big is 7128505428?- 7,128,505,428 seconds is equal to 226 years, 34 weeks, 3 days, 20 hours, 23 minutes, 48 seconds.
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To count from 1 to 7,128,505,428 would take you about four hundred fifty-three 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 7128505428 cubic inches would be around 160.4 feet tall.
Recreational maths with 7128505428
- 7128505428 backwards is 8245058217
- The number of decimal digits it has is: 10
- The sum of 7128505428's digits is 42
- More coming soon!
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