428332 has 12 divisors (see below), whose sum is σ = 793800. Its totient is φ = 201536.

The previous prime is 428303. The next prime is 428339. The reversal of 428332 is 233824.

428332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (428339) by changing a digit.

428332 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, 3082 + ... + 3217.

It is an arithmetic number, because the mean of its divisors is an integer number (66150).

2⁴²⁸³³² is an apocalyptic number.

It is an amenable number.

428332 is a deficient number, since it is larger than the sum of its proper divisors (365468).

428332 is a wasteful number, since it uses less digits than its factorization.

428332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6320 (or 6318 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 428332 is about 654.4707785685. The cubic root of 428332 is about 75.3807013207.

The spelling of 428332 in words is "four hundred twenty-eight thousand, three hundred thirty-two".