428394 has 8 divisors (see below), whose sum is σ = 856800. Its totient is φ = 142796.

The previous prime is 428369. The next prime is 428401. The reversal of 428394 is 493824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

428394 is an admirable number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428394.

It is an unprimeable number.

428394 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, 35694 + ... + 35705.

It is an arithmetic number, because the mean of its divisors is an integer number (107100).

2⁴²⁸³⁹⁴ is an apocalyptic number.

428394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428394 is a wasteful number, since it uses less digits than its factorization.

428394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71404.

The product of its digits is 6912, while the sum is 30.

The square root of 428394 is about 654.5181433696. The cubic root of 428394 is about 75.3843382021.

The spelling of 428394 in words is "four hundred twenty-eight thousand, three hundred ninety-four".