428108 has 24 divisors (see below), whose sum is σ = 813120. Its totient is φ = 196560.

The previous prime is 428093. The next prime is 428137. The reversal of 428108 is 801824.

It is an unprimeable number.

428108 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 in 7 ways as a sum of consecutive naturals, for example, 3203 + ... + 3333.

It is an arithmetic number, because the mean of its divisors is an integer number (33880).

2⁴²⁸¹⁰⁸ is an apocalyptic number.

It is an amenable number.

428108 is a deficient number, since it is larger than the sum of its proper divisors (385012).

428108 is a wasteful number, since it uses less digits than its factorization.

428108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 428108 is about 654.2996255539. The cubic root of 428108 is about 75.3675586951.

The spelling of 428108 in words is "four hundred twenty-eight thousand, one hundred eight".