813129920
813,129,920 is an even composite number composed of four prime numbers multiplied together.
813129920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of eighty-four divisors.
Prime factorization of 813129920:
26 × 5 × 1132 × 199
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 113 × 113 × 199)See below for interesting mathematical facts about the number 813129920 from the Numbermatics database.
Names of 813129920
- Cardinal: 813129920 can be written as Eight hundred thirteen million, one hundred twenty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 8.1312992 × 108
Factors of 813129920
Divisors of 813129920
- Number of divisors d(n): 84
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Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 64 80 113 160 199 226 320 398 452 565 796 904 995 1130 1592 1808 1990 2260 3184 3616 3980 4520 6368 7232 7960 9040 12736 12769 15920 18080 22487 25538 31840 36160 44974 51076 63680 63845 89948 102152 112435 127690 179896 204304 224870 255380 359792 408608 449740 510760 719584 817216 899480 1021520 1439168 1798960 2043040 2541031 3597920 4086080 5082062 7195840 10164124 12705155 20328248 25410310 40656496 50820620 81312992 101641240 162625984 203282480 406564960 813129920
- Sum of all divisors σ(n): 1963369200
- Sum of proper divisors (its aliquot sum) s(n): 1150239280
- 813129920 is an abundant number, because the sum of its proper divisors (1150239280) is greater than itself. Its abundance is 337109360
Bases of 813129920
- Binary: 1100000111011101100000110000002
- Hexadecimal: 0x307760C0
- Base-36: DG4728
Squares and roots of 813129920
- 813129920 squared (8131299202) is 661180266799206400
- 813129920 cubed (8131299203) is 537625457448017356095488000
-
The
square root of 813129920 is 28515.4330144223 -
The
cube root of 813129920 is 933.3688739301
Scales and comparisons
How big is 813129920?- 813,129,920 seconds is equal to 25 years, 44 weeks, 3 days, 5 hours, 25 minutes, 20 seconds.
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To count from 1 to 813,129,920 would take you about thirty-eight 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 813129920 cubic inches would be around 77.8 feet tall.
Recreational maths with 813129920
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