everyutil/number/isHarshadNumber.js

A comprehensive library of lightweight, reusable utility functions for JavaScript and TypeScript, designed to streamline common programming tasks such as string manipulation, array processing, date handling, and more.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isHarshadNumber = void 0;
/**
 * Checks if a number is a Harshad number (divisible by the sum of its digits).
 * @author @dailker
 * @param {number} n - The number to check.
 * @returns {boolean} True if Harshad number.
 */
function isHarshadNumber(n) {
    const sum = Math.abs(n).toString().split('').reduce((a, b) => a + +b, 0);
    return n % sum === 0;
}
exports.isHarshadNumber = isHarshadNumber;