389991072
389,991,072 is an even composite number composed of five prime numbers multiplied together.
389991072 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 389991072:
25 × 3 × 29 × 71 × 1973
(2 × 2 × 2 × 2 × 2 × 3 × 29 × 71 × 1973)See below for interesting mathematical facts about the number 389991072 from the Numbermatics database.
Names of 389991072
- Cardinal: 389991072 can be written as Three hundred eighty-nine million, nine hundred ninety-one thousand and seventy-two.
Scientific notation
- Scientific notation: 3.89991072 × 108
Factors of 389991072
Divisors of 389991072
- Number of divisors d(n): 96
-
Complete list of divisors:
1 2 3 4 6 8 12 16 24 29 32 48 58 71 87 96 116 142 174 213 232 284 348 426 464 568 696 852 928 1136 1392 1704 1973 2059 2272 2784 3408 3946 4118 5919 6177 6816 7892 8236 11838 12354 15784 16472 23676 24708 31568 32944 47352 49416 57217 63136 65888 94704 98832 114434 140083 171651 189408 197664 228868 280166 343302 420249 457736 560332 686604 840498 915472 1120664 1373208 1680996 1830944 2241328 2746416 3361992 4062407 4482656 5492832 6723984 8124814 12187221 13447968 16249628 24374442 32499256 48748884 64998512 97497768 129997024 194995536 389991072
- Sum of all divisors σ(n): 1074487680
- Sum of proper divisors (its aliquot sum) s(n): 684496608
- 389991072 is an abundant number, because the sum of its proper divisors (684496608) is greater than itself. Its abundance is 294505536
Bases of 389991072
- Binary: 101110011111011001010101000002
- Hexadecimal: 0x173ECAA0
- Base-36: 6G6V1C
Squares and roots of 389991072
- 389991072 squared (3899910722) is 152093036239709184
- 389991072 cubed (3899910723) is 59314926246859033636405248
-
The
square root of 389991072 is 19748.1916134111 -
The
cube root of 389991072 is 730.6087822141
Scales and comparisons
How big is 389991072?- 389,991,072 seconds is equal to 12 years, 20 weeks, 5 days, 18 hours, 51 minutes, 12 seconds.
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To count from 1 to 389,991,072 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 389991072 cubic inches would be around 60.9 feet tall.
Recreational maths with 389991072
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