389905920
389,905,920 is an even composite number composed of four prime numbers multiplied together.
389905920 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 389905920:
29 × 33 × 5 × 5641
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 5641)See below for interesting mathematical facts about the number 389905920 from the Numbermatics database.
Names of 389905920
- Cardinal: 389905920 can be written as Three hundred eighty-nine million, nine hundred five thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 3.8990592 × 108
Factors of 389905920
Divisors of 389905920
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 256 270 288 320 360 384 432 480 512 540 576 640 720 768 864 960 1080 1152 1280 1440 1536 1728 1920 2160 2304 2560 2880 3456 3840 4320 4608 5641 5760 6912 7680 8640 11282 11520 13824 16923 17280 22564 23040 28205 33846 34560 45128 50769 56410 67692 69120 84615 90256 101538 112820 135384 152307 169230 180512 203076 225640 253845 270768 304614 338460 361024 406152 451280 507690 541536 609228 676920 722048 761535 812304 902560 1015380 1083072 1218456 1353840 1444096 1523070 1624608 1805120 2030760 2166144 2436912 2707680 2888192 3046140 3249216 3610240 4061520 4332288 4873824 5415360 6092280 6498432 7220480 8123040 8664576 9747648 10830720 12184560 12996864 14440960 16246080 19495296 21661440 24369120 25993728 32492160 38990592 43322880 48738240 64984320 77981184 97476480 129968640 194952960 389905920
- Sum of all divisors σ(n): 1385223840
- Sum of proper divisors (its aliquot sum) s(n): 995317920
- 389905920 is an abundant number, because the sum of its proper divisors (995317920) is greater than itself. Its abundance is 605412000
Bases of 389905920
- Binary: 101110011110101111110000000002
- Hexadecimal: 0x173D7E00
- Base-36: 6G51C0
Squares and roots of 389905920
- 389905920 squared (3899059202) is 152026626451046400
- 389905920 cubed (3899059203) is 59276081650891581554688000
-
The
square root of 389905920 is 19746.0355514721 -
The
cube root of 389905920 is 730.5556037939
Scales and comparisons
How big is 389905920?- 389,905,920 seconds is equal to 12 years, 20 weeks, 4 days, 19 hours, 12 minutes.
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To count from 1 to 389,905,920 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 389905920 cubic inches would be around 60.9 feet tall.
Recreational maths with 389905920
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