81342450
81,342,450 is an even composite number composed of six prime numbers multiplied together.
81342450 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 81342450:
2 × 32 × 52 × 73 × 17 × 31
(2 × 3 × 3 × 5 × 5 × 7 × 7 × 7 × 17 × 31)See below for interesting mathematical facts about the number 81342450 from the Numbermatics database.
Names of 81342450
- Cardinal: 81342450 can be written as Eighty-one million, three hundred forty-two thousand, four hundred fifty.
Scientific notation
- Scientific notation: 8.134245 × 107
Factors of 81342450
Divisors of 81342450
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 5 6 7 9 10 14 15 17 18 21 25 30 31 34 35 42 45 49 50 51 62 63 70 75 85 90 93 98 102 105 119 126 147 150 153 155 170 175 186 210 217 225 238 245 255 279 294 306 310 315 343 350 357 425 434 441 450 465 490 510 525 527 558 595 630 651 686 714 735 765 775 833 850 882 930 1029 1050 1054 1071 1085 1190 1225 1275 1302 1395 1470 1519 1530 1550 1575 1581 1666 1715 1785 1953 2058 2142 2170 2205 2325 2450 2499 2550 2635 2790 2975 3038 3087 3150 3162 3255 3430 3570 3675 3689 3825 3906 4165 4410 4557 4650 4743 4998 5145 5270 5355 5425 5831 5950 6174 6510 6975 7350 7378 7497 7595 7650 7905 8330 8575 8925 9114 9486 9765 10290 10633 10710 10850 11025 11067 11662 12495 13175 13671 13950 14994 15190 15435 15810 16275 17150 17493 17850 18445 19530 20825 21266 22050 22134 22785 23715 24990 25725 25823 26350 26775 27342 29155 30870 31899 32550 33201 34986 36890 37485 37975 39525 41650 45570 47430 48825 51450 51646 52479 53165 53550 55335 58310 62475 63798 66402 68355 74970 75950 77175 77469 79050 87465 92225 95697 97650 104958 106330 110670 113925 118575 124950 129115 136710 145775 154350 154938 159495 166005 174930 180761 184450 187425 191394 227850 232407 237150 258230 262395 265825 276675 291550 318990 332010 341775 361522 374850 387345 437325 464814 478485 524790 531650 542283 553350 645575 683550 774690 797475 830025 874650 903805 956970 1084566 1162035 1291150 1311975 1594950 1626849 1660050 1807610 1936725 2324070 2392425 2623950 2711415 3253698 3873450 4519025 4784850 5422830 5810175 8134245 9038050 11620350 13557075 16268490 27114150 40671225 81342450
- Sum of all divisors σ(n): 278553600
- Sum of proper divisors (its aliquot sum) s(n): 197211150
- 81342450 is an abundant number, because the sum of its proper divisors (197211150) is greater than itself. Its abundance is 115868700
Bases of 81342450
- Binary: 1001101100100101111111100102
- Hexadecimal: 0x4D92FF2
- Base-36: 1CFG8I
Squares and roots of 81342450
- 81342450 squared (813424502) is 6616594172002500
- 81342450 cubed (813424503) is 538209980606404756125000
-
The
square root of 81342450 is 9019.0049340269 -
The
cube root of 81342450 is 433.2837648759
Scales and comparisons
How big is 81342450?- 81,342,450 seconds is equal to 2 years, 30 weeks, 3 days, 11 hours, 7 minutes, 30 seconds.
-
To count from 1 to 81,342,450 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 81342450 cubic inches would be around 36.1 feet tall.
Recreational maths with 81342450
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