381318990
381,318,990 is an even composite number composed of seven prime numbers multiplied together.
381318990 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 381318990:
2 × 3 × 5 × 13 × 47 × 71 × 293
See below for interesting mathematical facts about the number 381318990 from the Numbermatics database.
Names of 381318990
- Cardinal: 381318990 can be written as Three hundred eighty-one million, three hundred eighteen thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 3.8131899 × 108
Factors of 381318990
Divisors of 381318990
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 10 13 15 26 30 39 47 65 71 78 94 130 141 142 195 213 235 282 293 355 390 426 470 586 611 705 710 879 923 1065 1222 1410 1465 1758 1833 1846 2130 2769 2930 3055 3337 3666 3809 4395 4615 5538 6110 6674 7618 8790 9165 9230 10011 11427 13771 13845 16685 18330 19045 20022 20803 22854 27542 27690 33370 38090 41313 41606 43381 50055 57135 62409 68855 82626 86762 100110 104015 114270 124818 130143 137710 179023 206565 208030 216905 260286 270439 312045 358046 413130 433810 537069 540878 624090 650715 811317 895115 977741 1074138 1301430 1352195 1622634 1790230 1955482 2685345 2704390 2933223 4056585 4888705 5370690 5866446 8113170 9777410 12710633 14666115 25421266 29332230 38131899 63553165 76263798 127106330 190659495 381318990
- Sum of all divisors σ(n): 1024192512
- Sum of proper divisors (its aliquot sum) s(n): 642873522
- 381318990 is an abundant number, because the sum of its proper divisors (642873522) is greater than itself. Its abundance is 261554532
Bases of 381318990
- Binary: 101101011101001110111010011102
- Hexadecimal: 0x16BA774E
- Base-36: 6B0ZM6
Squares and roots of 381318990
- 381318990 squared (3813189902) is 145404172134620100
- 381318990 cubed (3813189903) is 55445372060159480565699000
-
The
square root of 381318990 is 19527.3907627209 -
The
cube root of 381318990 is 725.1527161447
Scales and comparisons
How big is 381318990?- 381,318,990 seconds is equal to 12 years, 6 weeks, 3 days, 9 hours, 56 minutes, 30 seconds.
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To count from 1 to 381,318,990 would take you about eighteen 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 381318990 cubic inches would be around 60.4 feet tall.
Recreational maths with 381318990
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