85139640
85,139,640 is an even composite number composed of five prime numbers multiplied together.
85139640 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 85139640:
23 × 33 × 5 × 31 × 2543
(2 × 2 × 2 × 3 × 3 × 3 × 5 × 31 × 2543)See below for interesting mathematical facts about the number 85139640 from the Numbermatics database.
Names of 85139640
- Cardinal: 85139640 can be written as Eighty-five million, one hundred thirty-nine thousand, six hundred forty.
Scientific notation
- Scientific notation: 8.513964 × 107
Factors of 85139640
Divisors of 85139640
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 31 36 40 45 54 60 62 72 90 93 108 120 124 135 155 180 186 216 248 270 279 310 360 372 465 540 558 620 744 837 930 1080 1116 1240 1395 1674 1860 2232 2543 2790 3348 3720 4185 5086 5580 6696 7629 8370 10172 11160 12715 15258 16740 20344 22887 25430 30516 33480 38145 45774 50860 61032 68661 76290 78833 91548 101720 114435 137322 152580 157666 183096 228870 236499 274644 305160 315332 343305 394165 457740 472998 549288 630664 686610 709497 788330 915480 945996 1182495 1373220 1418994 1576660 1891992 2128491 2364990 2746440 2837988 3153320 3547485 4256982 4729980 5675976 7094970 8513964 9459960 10642455 14189940 17027928 21284910 28379880 42569820 85139640
- Sum of all divisors σ(n): 293068800
- Sum of proper divisors (its aliquot sum) s(n): 207929160
- 85139640 is an abundant number, because the sum of its proper divisors (207929160) is greater than itself. Its abundance is 122789520
Bases of 85139640
- Binary: 1010001001100100000101110002
- Hexadecimal: 0x51320B8
- Base-36: 1EOU60
Squares and roots of 85139640
- 85139640 squared (851396402) is 7248758299329600
- 85139640 cubed (851396403) is 617156672051934385344000
-
The
square root of 85139640 is 9227.1143918345 -
The
cube root of 85139640 is 439.9236093277
Scales and comparisons
How big is 85139640?- 85,139,640 seconds is equal to 2 years, 36 weeks, 5 days, 9 hours, 54 minutes.
-
To count from 1 to 85,139,640 would take you about four 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 85139640 cubic inches would be around 36.7 feet tall.
Recreational maths with 85139640
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