129955840
129,955,840 is an even composite number composed of four prime numbers multiplied together.
129955840 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 129955840:
211 × 5 × 73 × 37
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 7 × 7 × 37)See below for interesting mathematical facts about the number 129955840 from the Numbermatics database.
Names of 129955840
- Cardinal: 129955840 can be written as One hundred twenty-nine million, nine hundred fifty-five thousand, eight hundred forty.
Scientific notation
- Scientific notation: 1.2995584 × 108
Factors of 129955840
Divisors of 129955840
- Number of divisors d(n): 192
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 49 56 64 70 74 80 98 112 128 140 148 160 185 196 224 245 256 259 280 296 320 343 370 392 448 490 512 518 560 592 640 686 740 784 896 980 1024 1036 1120 1184 1280 1295 1372 1480 1568 1715 1792 1813 1960 2048 2072 2240 2368 2560 2590 2744 2960 3136 3430 3584 3626 3920 4144 4480 4736 5120 5180 5488 5920 6272 6860 7168 7252 7840 8288 8960 9065 9472 10240 10360 10976 11840 12544 12691 13720 14336 14504 15680 16576 17920 18130 18944 20720 21952 23680 25088 25382 27440 29008 31360 33152 35840 36260 37888 41440 43904 47360 50176 50764 54880 58016 62720 63455 66304 71680 72520 75776 82880 87808 94720 100352 101528 109760 116032 125440 126910 132608 145040 165760 175616 189440 203056 219520 232064 250880 253820 265216 290080 331520 351232 378880 406112 439040 464128 501760 507640 530432 580160 663040 702464 812224 878080 928256 1015280 1160320 1326080 1624448 1756160 1856512 2030560 2320640 2652160 3248896 3512320 3713024 4061120 4641280 6497792 8122240 9282560 12995584 16244480 18565120 25991168 32488960 64977920 129955840
- Sum of all divisors σ(n): 373464000
- Sum of proper divisors (its aliquot sum) s(n): 243508160
- 129955840 is an abundant number, because the sum of its proper divisors (243508160) is greater than itself. Its abundance is 113552320
Bases of 129955840
- Binary: 1111011111011111000000000002
- Hexadecimal: 0x7BEF800
- Base-36: 25DEKG
Squares and roots of 129955840
- 129955840 squared (1299558402) is 16888520350105600
- 129955840 cubed (1299558403) is 2194761848455067336704000
-
The
square root of 129955840 is 11399.8175423995 -
The
cube root of 129955840 is 506.5223350045
Scales and comparisons
How big is 129955840?- 129,955,840 seconds is equal to 4 years, 6 weeks, 6 days, 2 hours, 50 minutes, 40 seconds.
-
To count from 1 to 129,955,840 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 129955840 cubic inches would be around 42.2 feet tall.
Recreational maths with 129955840
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