138909420
138,909,420 is an even composite number composed of seven prime numbers multiplied together.
138909420 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 138909420:
22 × 32 × 5 × 13 × 23 × 29 × 89
(2 × 2 × 3 × 3 × 5 × 13 × 23 × 29 × 89)See below for interesting mathematical facts about the number 138909420 from the Numbermatics database.
Names of 138909420
- Cardinal: 138909420 can be written as One hundred thirty-eight million, nine hundred nine thousand, four hundred twenty.
Scientific notation
- Scientific notation: 1.3890942 × 108
Factors of 138909420
Divisors of 138909420
- Number of divisors d(n): 288
-
Complete list of divisors:
1 2 3 4 5 6 9 10 12 13 15 18 20 23 26 29 30 36 39 45 46 52 58 60 65 69 78 87 89 90 92 115 116 117 130 138 145 156 174 178 180 195 207 230 234 260 261 267 276 290 299 345 348 356 377 390 414 435 445 460 468 522 534 580 585 598 667 690 754 780 801 828 870 890 897 1035 1044 1068 1131 1157 1170 1196 1305 1334 1335 1380 1495 1508 1602 1740 1780 1794 1885 2001 2047 2070 2262 2314 2340 2581 2610 2668 2670 2691 2990 3204 3335 3393 3471 3588 3770 4002 4005 4094 4140 4485 4524 4628 5162 5220 5340 5382 5655 5785 5980 6003 6141 6670 6786 6942 7540 7743 8004 8010 8188 8671 8970 10005 10235 10324 10413 10764 11310 11570 12006 12282 12905 13340 13455 13572 13884 15486 16020 16965 17342 17355 17940 18423 20010 20470 20826 22620 23140 23229 24012 24564 25810 26013 26611 26910 30015 30705 30972 33553 33930 34684 34710 36846 38715 40020 40940 41652 43355 46458 51620 52026 52065 53222 53820 59363 60030 61410 67106 67860 69420 73692 77430 78039 79833 86710 92115 92916 100659 104052 104130 106444 116145 118726 120060 122820 130065 133055 134212 154860 156078 159666 167765 173420 178089 184230 201318 208260 232290 237452 239499 260130 266110 296815 301977 312156 319332 335530 356178 368460 390195 399165 402636 464580 478998 503295 520260 532220 534267 593630 603954 671060 712356 771719 780390 798330 890445 957996 1006590 1068534 1187260 1197495 1207908 1509885 1543438 1560780 1596660 1780890 2013180 2137068 2315157 2394990 2671335 3019770 3086876 3561780 3858595 4630314 4789980 5342670 6039540 6945471 7717190 9260628 10685340 11575785 13890942 15434380 23151570 27781884 34727355 46303140 69454710 138909420
- Sum of all divisors σ(n): 495331200
- Sum of proper divisors (its aliquot sum) s(n): 356421780
- 138909420 is an abundant number, because the sum of its proper divisors (356421780) is greater than itself. Its abundance is 217512360
Bases of 138909420
- Binary: 10000100011110010110111011002
- Hexadecimal: 0x84796EC
- Base-36: 2APB70
Squares and roots of 138909420
- 138909420 squared (1389094202) is 19295826964736400
- 138909420 cubed (1389094203) is 2680372132091893776888000
-
The
square root of 138909420 is 11785.9840488607 -
The
cube root of 138909420 is 517.8976010427
Scales and comparisons
How big is 138909420?- 138,909,420 seconds is equal to 4 years, 21 weeks, 4 days, 17 hours, 57 minutes.
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To count from 1 to 138,909,420 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 138909420 cubic inches would be around 43.2 feet tall.
Recreational maths with 138909420
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