How to Get Number of Product Reviews Magento 2

Display the average stars and reviews count of product

<?php
$productId = 'your_product_id';
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$reviewFactory = $objectManager->create('Magento\Review\Model\Review');
$product = $objectManager->create('Magento\Catalog\Model\Product')->load($productId);
$storeManager  = $objectManager->create('\Magento\Store\Model\StoreManagerInterface');
$storeId = $storeManager->getStore()->getStoreId();
$reviewFactory->getEntitySummary($product, $storeId);

$ratingSummary = $product->getRatingSummary()->getRatingSummary();
$reviewCount = $product->getRatingSummary()->getReviewsCount();
?>
<?php if($ratingSummary){ ?>
<div class="product-reviews-summary short">
    <div class="rating-summary">
        <div title="<?php echo (int)$ratingSummary; ?>%" class="rating-result">
            <span style="width:<?php echo (int)$ratingSummary; ?>%"><span><?php echo (int)$ratingSummary; ?>%</span></span>
        </div>
    </div>
    <div class="reviews-actions">
        <?php echo __('('.$reviewCount.') Reviews'); ?>
    </div>
</div>
<?php } ?>