428312 has 16 divisors (see below), whose sum is σ = 825360. Its totient is φ = 208224.

The previous prime is 428303. The next prime is 428339. The reversal of 428312 is 213824.

It is an Ulam number.

It is a congruent number.

It is an unprimeable 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, 428 + ... + 1019.

It is an arithmetic number, because the mean of its divisors is an integer number (51585).

2⁴²⁸³¹² is an apocalyptic number.

It is an amenable number.

428312 is a deficient number, since it is larger than the sum of its proper divisors (397048).

428312 is a wasteful number, since it uses less digits than its factorization.

428312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1486 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 428312 is about 654.4554988691. The cubic root of 428312 is about 75.3795280583.

The spelling of 428312 in words is "four hundred twenty-eight thousand, three hundred twelve".