428318 has 8 divisors (see below), whose sum is σ = 700920. Its totient is φ = 194680.

The previous prime is 428303. The next prime is 428339. The reversal of 428318 is 813824.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

428318 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, 9713 + ... + 9756.

It is an arithmetic number, because the mean of its divisors is an integer number (87615).

2⁴²⁸³¹⁸ is an apocalyptic number.

428318 is a deficient number, since it is larger than the sum of its proper divisors (272602).

428318 is a wasteful number, since it uses less digits than its factorization.

428318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19482.

The product of its digits is 1536, while the sum is 26.

The square root of 428318 is about 654.4600828164. The cubic root of 428318 is about 75.3798800409.

The spelling of 428318 in words is "four hundred twenty-eight thousand, three hundred eighteen".