389969970
389,969,970 is an even composite number composed of seven prime numbers multiplied together.
389969970 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 389969970:
2 × 3 × 5 × 13 × 17 × 131 × 449
See below for interesting mathematical facts about the number 389969970 from the Numbermatics database.
Names of 389969970
- Cardinal: 389969970 can be written as Three hundred eighty-nine million, nine hundred sixty-nine thousand, nine hundred seventy.
Scientific notation
- Scientific notation: 3.8996997 × 108
Factors of 389969970
Divisors of 389969970
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 5 6 10 13 15 17 26 30 34 39 51 65 78 85 102 130 131 170 195 221 255 262 390 393 442 449 510 655 663 786 898 1105 1310 1326 1347 1703 1965 2210 2227 2245 2694 3315 3406 3930 4454 4490 5109 5837 6630 6681 6735 7633 8515 10218 11135 11674 13362 13470 15266 17030 17511 22270 22899 25545 28951 29185 33405 35022 38165 45798 51090 57902 58370 58819 66810 76330 86853 87555 99229 114495 117638 144755 173706 175110 176457 198458 228990 289510 294095 297687 352914 434265 496145 588190 595374 764647 868530 882285 992290 999923 1488435 1529294 1764570 1999846 2293941 2976870 2999769 3823235 4587882 4999615 5999538 7646470 9999230 11469705 12998999 14998845 22939410 25997998 29997690 38996997 64994995 77993994 129989990 194984985 389969970
- Sum of all divisors σ(n): 1077753600
- Sum of proper divisors (its aliquot sum) s(n): 687783630
- 389969970 is an abundant number, because the sum of its proper divisors (687783630) is greater than itself. Its abundance is 297813660
Bases of 389969970
- Binary: 101110011111001111000001100102
- Hexadecimal: 0x173E7832
- Base-36: 6G6ER6
Squares and roots of 389969970
- 389969970 squared (3899699702) is 152076577501800900
- 389969970 cubed (3899699703) is 59305298366079971918973000
-
The
square root of 389969970 is 19747.6573294151 -
The
cube root of 389969970 is 730.5956044897
Scales and comparisons
How big is 389969970?- 389,969,970 seconds is equal to 12 years, 20 weeks, 5 days, 12 hours, 59 minutes, 30 seconds.
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To count from 1 to 389,969,970 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 389969970 cubic inches would be around 60.9 feet tall.
Recreational maths with 389969970
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