428782 has 4 divisors (see below), whose sum is σ = 643176. Its totient is φ = 214390.

The previous prime is 428777. The next prime is 428797. The reversal of 428782 is 287824.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107194 + ... + 107197.

It is an arithmetic number, because the mean of its divisors is an integer number (160794).

2⁴²⁸⁷⁸² is an apocalyptic number.

428782 is a deficient number, since it is larger than the sum of its proper divisors (214394).

428782 is a wasteful number, since it uses less digits than its factorization.

428782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214393.

The product of its digits is 7168, while the sum is 31.

The square root of 428782 is about 654.8144775431. The cubic root of 428782 is about 75.4070900748.

The spelling of 428782 in words is "four hundred twenty-eight thousand, seven hundred eighty-two".