388849920
388,849,920 is an even composite number composed of five prime numbers multiplied together.
388849920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 388849920:
28 × 3 × 5 × 131 × 773
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 131 × 773)See below for interesting mathematical facts about the number 388849920 from the Numbermatics database.
Names of 388849920
- Cardinal: 388849920 can be written as Three hundred eighty-eight million, eight hundred forty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 3.8884992 × 108
Factors of 388849920
Divisors of 388849920
- Number of divisors d(n): 144
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 131 160 192 240 256 262 320 384 393 480 524 640 655 768 773 786 960 1048 1280 1310 1546 1572 1920 1965 2096 2319 2620 3092 3144 3840 3865 3930 4192 4638 5240 6184 6288 7730 7860 8384 9276 10480 11595 12368 12576 15460 15720 16768 18552 20960 23190 24736 25152 30920 31440 33536 37104 41920 46380 49472 50304 61840 62880 74208 83840 92760 98944 100608 101263 123680 125760 148416 167680 185520 197888 202526 247360 251520 296832 303789 371040 405052 494720 503040 506315 593664 607578 742080 810104 989440 1012630 1215156 1484160 1518945 1620208 2025260 2430312 2968320 3037890 3240416 4050520 4860624 6075780 6480832 8101040 9721248 12151560 12961664 16202080 19442496 24303120 25923328 32404160 38884992 48606240 64808320 77769984 97212480 129616640 194424960 388849920
- Sum of all divisors σ(n): 1252988352
- Sum of proper divisors (its aliquot sum) s(n): 864138432
- 388849920 is an abundant number, because the sum of its proper divisors (864138432) is greater than itself. Its abundance is 475288512
Bases of 388849920
- Binary: 101110010110101100001000000002
- Hexadecimal: 0x172D6100
- Base-36: 6FIEIO
Squares and roots of 388849920
- 388849920 squared (3888499202) is 151204260284006400
- 388849920 cubed (3888499203) is 58795764515095065919488000
-
The
square root of 388849920 is 19719.2778772449 -
The
cube root of 388849920 is 729.8954751201
Scales and comparisons
How big is 388849920?- 388,849,920 seconds is equal to 12 years, 18 weeks, 6 days, 13 hours, 52 minutes.
-
To count from 1 to 388,849,920 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 388849920 cubic inches would be around 60.8 feet tall.
Recreational maths with 388849920
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