129870720
129,870,720 is an even composite number composed of five prime numbers multiplied together.
129870720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 129870720:
27 × 32 × 5 × 7 × 3221
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 3221)See below for interesting mathematical facts about the number 129870720 from the Numbermatics database.
Names of 129870720
- Cardinal: 129870720 can be written as One hundred twenty-nine million, eight hundred seventy thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.2987072 × 108
Factors of 129870720
Divisors of 129870720
- Number of divisors d(n): 192
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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 32 35 36 40 42 45 48 56 60 63 64 70 72 80 84 90 96 105 112 120 126 128 140 144 160 168 180 192 210 224 240 252 280 288 315 320 336 360 384 420 448 480 504 560 576 630 640 672 720 840 896 960 1008 1120 1152 1260 1344 1440 1680 1920 2016 2240 2520 2688 2880 3221 3360 4032 4480 5040 5760 6442 6720 8064 9663 10080 12884 13440 16105 19326 20160 22547 25768 28989 32210 38652 40320 45094 48315 51536 57978 64420 67641 77304 90188 96630 103072 112735 115956 128840 135282 144945 154608 180376 193260 202923 206144 225470 231912 257680 270564 289890 309216 338205 360752 386520 405846 412288 450940 463824 515360 541128 579780 618432 676410 721504 773040 811692 901880 927648 1014615 1030720 1082256 1159560 1236864 1352820 1443008 1546080 1623384 1803760 1855296 2029230 2061440 2164512 2319120 2705640 2886016 3092160 3246768 3607520 3710592 4058460 4329024 4638240 5411280 6184320 6493536 7215040 8116920 8658048 9276480 10822560 12987072 14430080 16233840 18552960 21645120 25974144 32467680 43290240 64935360 129870720
- Sum of all divisors σ(n): 512684640
- Sum of proper divisors (its aliquot sum) s(n): 382813920
- 129870720 is an abundant number, because the sum of its proper divisors (382813920) is greater than itself. Its abundance is 252943200
Bases of 129870720
- Binary: 1111011110110101011100000002
- Hexadecimal: 0x7BDAB80
- Base-36: 25BKW0
Squares and roots of 129870720
- 129870720 squared (1298707202) is 16866403913318400
- 129870720 cubed (1298707203) is 2190452020033478197248000
-
The
square root of 129870720 is 11396.0835377773 -
The
cube root of 129870720 is 506.4117215379
Scales and comparisons
How big is 129870720?- 129,870,720 seconds is equal to 4 years, 6 weeks, 5 days, 3 hours, 12 minutes.
-
To count from 1 to 129,870,720 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 129870720 cubic inches would be around 42.2 feet tall.
Recreational maths with 129870720
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