428828 has 12 divisors (see below), whose sum is σ = 766752. Its totient is φ = 209760.

The previous prime is 428809. The next prime is 428833. The reversal of 428828 is 828824.

428828 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 428794 and 428803.

It is a congruent number.

It is an unprimeable number.

428828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (63896).

2⁴²⁸⁸²⁸ is an apocalyptic number.

It is an amenable number.

428828 is a deficient number, since it is larger than the sum of its proper divisors (337924).

428828 is a wasteful number, since it uses less digits than its factorization.

428828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2330 counting only the distinct ones).

The product of its digits is 8192, while the sum is 32.

The square root of 428828 is about 654.8496010536. The cubic root of 428828 is about 75.4097865516.

The spelling of 428828 in words is "four hundred twenty-eight thousand, eight hundred twenty-eight".