129720864
129,720,864 is an even composite number composed of six prime numbers multiplied together.
129720864 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 129720864:
25 × 3 × 7 × 13 × 31 × 479
(2 × 2 × 2 × 2 × 2 × 3 × 7 × 13 × 31 × 479)See below for interesting mathematical facts about the number 129720864 from the Numbermatics database.
Names of 129720864
- Cardinal: 129720864 can be written as One hundred twenty-nine million, seven hundred twenty thousand, eight hundred sixty-four.
Scientific notation
- Scientific notation: 1.29720864 × 108
Factors of 129720864
Divisors of 129720864
- Number of divisors d(n): 192
-
Complete list of divisors:
1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 31 32 39 42 48 52 56 62 78 84 91 93 96 104 112 124 156 168 182 186 208 217 224 248 273 312 336 364 372 403 416 434 479 496 546 624 651 672 728 744 806 868 958 992 1092 1209 1248 1302 1437 1456 1488 1612 1736 1916 2184 2418 2604 2821 2874 2912 2976 3224 3353 3472 3832 4368 4836 5208 5642 5748 6227 6448 6706 6944 7664 8463 8736 9672 10059 10416 11284 11496 12454 12896 13412 14849 15328 16926 18681 19344 20118 20832 22568 22992 24908 26824 29698 33852 37362 38688 40236 43589 44547 45136 45984 49816 53648 59396 67704 74724 80472 87178 89094 90272 99632 103943 107296 118792 130767 135408 149448 160944 174356 178188 193037 199264 207886 237584 261534 270816 298896 311829 321888 348712 356376 386074 415772 475168 523068 579111 597792 623658 697424 712752 772148 831544 1046136 1158222 1247316 1351259 1394848 1425504 1544296 1663088 2092272 2316444 2494632 2702518 3088592 3326176 4053777 4184544 4632888 4989264 5405036 6177184 8107554 9265776 9978528 10810072 16215108 18531552 21620144 32430216 43240288 64860432 129720864
- Sum of all divisors σ(n): 433520640
- Sum of proper divisors (its aliquot sum) s(n): 303799776
- 129720864 is an abundant number, because the sum of its proper divisors (303799776) is greater than itself. Its abundance is 174078912
Bases of 129720864
- Binary: 1111011101101100010001000002
- Hexadecimal: 0x7BB6220
- Base-36: 258D9C
Squares and roots of 129720864
- 129720864 squared (1297208642) is 16827502556906496
- 129720864 cubed (1297208643) is 2182878170644119828332544
-
The
square root of 129720864 is 11389.5067496359 -
The
cube root of 129720864 is 506.2168661139
Scales and comparisons
How big is 129720864?- 129,720,864 seconds is equal to 4 years, 6 weeks, 3 days, 9 hours, 34 minutes, 24 seconds.
-
To count from 1 to 129,720,864 would take you about six 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 129720864 cubic inches would be around 42.2 feet tall.
Recreational maths with 129720864
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