Square Root Calculator › Square root of 458
Square Root of 458
√458 ≈ 21.400935
458 is not a perfect square, so √458 is an irrational number that is approximately 21.400935. In simplified radical form, √458 = √458.
√458 lies between √441 = 21 and √484 = 22.
| Number | 458 |
| Square root (decimal) | 21.400935 |
| Simplified radical | √458 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 458 a perfect square?
No, 458 is not a perfect square, so its square root is irrational and approximately 21.400935.
What is the square root of 458 in simplest radical form?
√458 = √458 in simplest radical form.