81426384
81,426,384 is an even composite number composed of four prime numbers multiplied together.
81426384 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 81426384:
24 × 37 × 13 × 179
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 13 × 179)See below for interesting mathematical facts about the number 81426384 from the Numbermatics database.
Names of 81426384
- Cardinal: 81426384 can be written as Eighty-one million, four hundred twenty-six thousand, three hundred eighty-four.
Scientific notation
- Scientific notation: 8.1426384 × 107
Factors of 81426384
Divisors of 81426384
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 3 4 6 8 9 12 13 16 18 24 26 27 36 39 48 52 54 72 78 81 104 108 117 144 156 162 179 208 216 234 243 312 324 351 358 432 468 486 537 624 648 702 716 729 936 972 1053 1074 1296 1404 1432 1458 1611 1872 1944 2106 2148 2187 2327 2808 2864 2916 3159 3222 3888 4212 4296 4374 4654 4833 5616 5832 6318 6444 6981 8424 8592 8748 9308 9477 9666 11664 12636 12888 13962 14499 16848 17496 18616 18954 19332 20943 25272 25776 27924 28431 28998 34992 37232 37908 38664 41886 43497 50544 55848 56862 57996 62829 75816 77328 83772 86994 111696 113724 115992 125658 130491 151632 167544 173988 188487 227448 231984 251316 260982 335088 347976 376974 391473 454896 502632 521964 565461 695952 753948 782946 1005264 1043928 1130922 1507896 1565892 1696383 2087856 2261844 3015792 3131784 3392766 4523688 5089149 6263568 6785532 9047376 10178298 13571064 20356596 27142128 40713192 81426384
- Sum of all divisors σ(n): 256233600
- Sum of proper divisors (its aliquot sum) s(n): 174807216
- 81426384 is an abundant number, because the sum of its proper divisors (174807216) is greater than itself. Its abundance is 93380832
Bases of 81426384
- Binary: 1001101101001110111110100002
- Hexadecimal: 0x4DA77D0
- Base-36: 1CH900
Squares and roots of 81426384
- 81426384 squared (814263842) is 6630256011315456
- 81426384 cubed (814263843) is 539877771995680665391104
-
The
square root of 81426384 is 9023.6569083715 -
The
cube root of 81426384 is 433.4327430049
Scales and comparisons
How big is 81426384?- 81,426,384 seconds is equal to 2 years, 30 weeks, 4 days, 10 hours, 26 minutes, 24 seconds.
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To count from 1 to 81,426,384 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 81426384 cubic inches would be around 36.1 feet tall.
Recreational maths with 81426384
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