428704 has 12 divisors (see below), whose sum is σ = 844074. Its totient is φ = 214336.

The previous prime is 428693. The next prime is 428731. The reversal of 428704 is 407824.

428704 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 425104 + 3600 = 652^2 + 60^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

428704 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6667 + ... + 6730.

2⁴²⁸⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

428704 is a deficient number, since it is larger than the sum of its proper divisors (415370).

428704 is a wasteful number, since it uses less digits than its factorization.

428704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13407 (or 13399 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 428704 is about 654.7549159800. The cubic root of 428704 is about 75.4025173473.

The spelling of 428704 in words is "four hundred twenty-eight thousand, seven hundred four".