189897890
189,897,890 is an even composite number composed of seven prime numbers multiplied together.
189897890 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 189897890:
2 × 5 × 7 × 13 × 23 × 43 × 211
See below for interesting mathematical facts about the number 189897890 from the Numbermatics database.
Names of 189897890
- Cardinal: 189897890 can be written as One hundred eighty-nine million, eight hundred ninety-seven thousand, eight hundred ninety.
Scientific notation
- Scientific notation: 1.8989789 × 108
Factors of 189897890
Divisors of 189897890
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 5 7 10 13 14 23 26 35 43 46 65 70 86 91 115 130 161 182 211 215 230 299 301 322 422 430 455 559 598 602 805 910 989 1055 1118 1477 1495 1505 1610 1978 2093 2110 2743 2795 2954 2990 3010 3913 4186 4853 4945 5486 5590 6923 7385 7826 9073 9706 9890 10465 12857 13715 13846 14770 18146 19201 19565 20930 24265 25714 27430 33971 34615 38402 39130 45365 48530 63089 63511 64285 67942 69230 89999 90730 96005 117949 126178 127022 128570 169855 179998 192010 208679 235898 315445 317555 339710 417358 441623 449995 589745 630890 635110 825643 883246 899990 1043395 1179490 1460753 1651286 2086790 2208115 2712827 2921506 4128215 4416230 5425654 7303765 8256430 13564135 14607530 18989789 27128270 37979578 94948945 189897890
- Sum of all divisors σ(n): 451325952
- Sum of proper divisors (its aliquot sum) s(n): 261428062
- 189897890 is an abundant number, because the sum of its proper divisors (261428062) is greater than itself. Its abundance is 71530172
Bases of 189897890
- Binary: 10110101000110011100101000102
- Hexadecimal: 0xB519CA2
- Base-36: 35265E
Squares and roots of 189897890
- 189897890 squared (1898978902) is 36061208626452100
- 189897890 cubed (1898978903) is 6847947429013051976069000
-
The
square root of 189897890 is 13780.3443353205 -
The
cube root of 189897890 is 574.7867034961
Scales and comparisons
How big is 189897890?- 189,897,890 seconds is equal to 6 years, 1 week, 6 days, 21 hours, 24 minutes, 50 seconds.
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To count from 1 to 189,897,890 would take you about nine 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 189897890 cubic inches would be around 47.9 feet tall.
Recreational maths with 189897890
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