55138720
55,138,720 is an even composite number composed of five prime numbers multiplied together.
55138720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 55138720:
25 × 5 × 72 × 13 × 541
(2 × 2 × 2 × 2 × 2 × 5 × 7 × 7 × 13 × 541)See below for interesting mathematical facts about the number 55138720 from the Numbermatics database.
Names of 55138720
- Cardinal: 55138720 can be written as Fifty-five million, one hundred thirty-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 5.513872 × 107
Factors of 55138720
Divisors of 55138720
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 49 52 56 65 70 80 91 98 104 112 130 140 160 182 196 208 224 245 260 280 364 392 416 455 490 520 541 560 637 728 784 910 980 1040 1082 1120 1274 1456 1568 1820 1960 2080 2164 2548 2705 2912 3185 3640 3787 3920 4328 5096 5410 6370 7033 7280 7574 7840 8656 10192 10820 12740 14066 14560 15148 17312 18935 20384 21640 25480 26509 28132 30296 35165 37870 43280 49231 50960 53018 56264 60592 70330 75740 86560 98462 101920 106036 112528 121184 132545 140660 151480 196924 212072 225056 246155 265090 281320 302960 344617 393848 424144 492310 530180 562640 605920 689234 787696 848288 984620 1060360 1125280 1378468 1575392 1723085 1969240 2120720 2756936 3446170 3938480 4241440 5513872 6892340 7876960 11027744 13784680 27569360 55138720
- Sum of all divisors σ(n): 163491048
- Sum of proper divisors (its aliquot sum) s(n): 108352328
- 55138720 is an abundant number, because the sum of its proper divisors (108352328) is greater than itself. Its abundance is 53213608
Bases of 55138720
- Binary: 110100100101011001101000002
- Hexadecimal: 0x34959A0
- Base-36: WTTB4
Squares and roots of 55138720
- 55138720 squared (551387202) is 3040278443238400
- 55138720 cubed (551387203) is 167637061803758030848000
-
The
square root of 55138720 is 7425.5450978363 -
The
cube root of 55138720 is 380.6147022361
Scales and comparisons
How big is 55138720?- 55,138,720 seconds is equal to 1 year, 39 weeks, 1 day, 4 hours, 18 minutes, 40 seconds.
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To count from 1 to 55,138,720 would take you about two 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 55138720 cubic inches would be around 31.7 feet tall.
Recreational maths with 55138720
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