428326 has 4 divisors (see below), whose sum is σ = 642492. Its totient is φ = 214162.

The previous prime is 428303. The next prime is 428339. The reversal of 428326 is 623824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 428326.

It is a congruent number.

It is an unprimeable number.

428326 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 as a sum of consecutive naturals, namely, 107080 + ... + 107083.

It is an arithmetic number, because the mean of its divisors is an integer number (160623).

2⁴²⁸³²⁶ is an apocalyptic number.

428326 is a deficient number, since it is larger than the sum of its proper divisors (214166).

428326 is a wasteful number, since it uses less digits than its factorization.

428326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214165.

The product of its digits is 2304, while the sum is 25.

The square root of 428326 is about 654.4661946961. The cubic root of 428326 is about 75.3803493458.

The spelling of 428326 in words is "four hundred twenty-eight thousand, three hundred twenty-six".