397490990
397,490,990 is an even composite number composed of six prime numbers multiplied together.
397490990 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 397490990:
2 × 5 × 13 × 31 × 53 × 1861
See below for interesting mathematical facts about the number 397490990 from the Numbermatics database.
Names of 397490990
- Cardinal: 397490990 can be written as Three hundred ninety-seven million, four hundred ninety thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 3.9749099 × 108
Factors of 397490990
Divisors of 397490990
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 5 10 13 26 31 53 62 65 106 130 155 265 310 403 530 689 806 1378 1643 1861 2015 3286 3445 3722 4030 6890 8215 9305 16430 18610 21359 24193 42718 48386 57691 98633 106795 115382 120965 197266 213590 241930 288455 493165 576910 749983 986330 1282229 1499966 2564458 3057623 3749915 6115246 6411145 7499830 12822290 15288115 30576230 39749099 79498198 198745495 397490990
- Sum of all divisors σ(n): 810819072
- Sum of proper divisors (its aliquot sum) s(n): 413328082
- 397490990 is an abundant number, because the sum of its proper divisors (413328082) is greater than itself. Its abundance is 15837092
Bases of 397490990
- Binary: 101111011000100111011001011102
- Hexadecimal: 0x17B13B2E
- Base-36: 6KNM0E
Squares and roots of 397490990
- 397490990 squared (3974909902) is 157999087131180100
- 397490990 cubed (3974909903) is 62803213562869037817299000
-
The
square root of 397490990 is 19937.1760788733 -
The
cube root of 397490990 is 735.2625221085
Scales and comparisons
How big is 397490990?- 397,490,990 seconds is equal to 12 years, 33 weeks, 1 day, 14 hours, 9 minutes, 50 seconds.
-
To count from 1 to 397,490,990 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 397490990 cubic inches would be around 61.3 feet tall.
Recreational maths with 397490990
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