71139920
71,139,920 is an even composite number composed of four prime numbers multiplied together.
71139920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety divisors.
Prime factorization of 71139920:
24 × 5 × 232 × 412
(2 × 2 × 2 × 2 × 5 × 23 × 23 × 41 × 41)See below for interesting mathematical facts about the number 71139920 from the Numbermatics database.
Names of 71139920
- Cardinal: 71139920 can be written as Seventy-one million, one hundred thirty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 7.113992 × 107
Factors of 71139920
Divisors of 71139920
- Number of divisors d(n): 90
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Complete list of divisors:
1 2 4 5 8 10 16 20 23 40 41 46 80 82 92 115 164 184 205 230 328 368 410 460 529 656 820 920 943 1058 1640 1681 1840 1886 2116 2645 3280 3362 3772 4232 4715 5290 6724 7544 8405 8464 9430 10580 13448 15088 16810 18860 21160 21689 26896 33620 37720 38663 42320 43378 67240 75440 77326 86756 108445 134480 154652 173512 193315 216890 309304 347024 386630 433780 618608 773260 867560 889249 1546520 1735120 1778498 3093040 3556996 4446245 7113992 8892490 14227984 17784980 35569960 71139920
- Sum of all divisors σ(n): 177224334
- Sum of proper divisors (its aliquot sum) s(n): 106084414
- 71139920 is an abundant number, because the sum of its proper divisors (106084414) is greater than itself. Its abundance is 34944494
Bases of 71139920
- Binary: 1000011110110000010010100002
- Hexadecimal: 0x43D8250
- Base-36: 16CRWW
Squares and roots of 71139920
- 71139920 squared (711399202) is 5060888217606400
- 71139920 cubed (711399203) is 360031182929461887488000
-
The
square root of 71139920 is 8434.4484111291 -
The
cube root of 71139920 is 414.3536073545
Scales and comparisons
How big is 71139920?- 71,139,920 seconds is equal to 2 years, 13 weeks, 4 days, 9 hours, 5 minutes, 20 seconds.
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To count from 1 to 71,139,920 would take you about three 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 71139920 cubic inches would be around 34.5 feet tall.
Recreational maths with 71139920
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