138765720
138,765,720 is an even composite number composed of five prime numbers multiplied together.
138765720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 138765720:
23 × 3 × 5 × 1032 × 109
(2 × 2 × 2 × 3 × 5 × 103 × 103 × 109)See below for interesting mathematical facts about the number 138765720 from the Numbermatics database.
Names of 138765720
- Cardinal: 138765720 can be written as One hundred thirty-eight million, seven hundred sixty-five thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.3876572 × 108
Factors of 138765720
Divisors of 138765720
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 103 109 120 206 218 309 327 412 436 515 545 618 654 824 872 1030 1090 1236 1308 1545 1635 2060 2180 2472 2616 3090 3270 4120 4360 6180 6540 10609 11227 12360 13080 21218 22454 31827 33681 42436 44908 53045 56135 63654 67362 84872 89816 106090 112270 127308 134724 159135 168405 212180 224540 254616 269448 318270 336810 424360 449080 636540 673620 1156381 1273080 1347240 2312762 3469143 4625524 5781905 6938286 9251048 11563810 13876572 17345715 23127620 27753144 34691430 46255240 69382860 138765720
- Sum of all divisors σ(n): 424234800
- Sum of proper divisors (its aliquot sum) s(n): 285469080
- 138765720 is an abundant number, because the sum of its proper divisors (285469080) is greater than itself. Its abundance is 146703360
Bases of 138765720
- Binary: 10000100010101100101100110002
- Hexadecimal: 0x8456598
- Base-36: 2AM8BC
Squares and roots of 138765720
- 138765720 squared (1387657202) is 19255925047118400
- 138765720 cubed (1387657203) is 2672062303429418701248000
-
The
square root of 138765720 is 11779.8862473285 -
The
cube root of 138765720 is 517.7189533001
Scales and comparisons
How big is 138765720?- 138,765,720 seconds is equal to 4 years, 21 weeks, 3 days, 2 hours, 2 minutes.
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To count from 1 to 138,765,720 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 138765720 cubic inches would be around 43.1 feet tall.
Recreational maths with 138765720
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