428322 has 8 divisors (see below), whose sum is σ = 856656. Its totient is φ = 142772.

The previous prime is 428303. The next prime is 428339. The reversal of 428322 is 223824.

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

428322 is an admirable number.

It is an unprimeable number.

428322 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 3 ways as a sum of consecutive naturals, for example, 35688 + ... + 35699.

It is an arithmetic number, because the mean of its divisors is an integer number (107082).

2⁴²⁸³²² is an apocalyptic number.

428322 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.

428322 is a wasteful number, since it uses less digits than its factorization.

428322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71392.

The product of its digits is 768, while the sum is 21.

The square root of 428322 is about 654.4631387634. The cubic root of 428322 is about 75.3801146941.

The spelling of 428322 in words is "four hundred twenty-eight thousand, three hundred twenty-two".