428132 has 6 divisors (see below), whose sum is σ = 749238. Its totient is φ = 214064.

The previous prime is 428093. The next prime is 428137. The reversal of 428132 is 231824.

It can be written as a sum of positive squares in only one way, i.e., 417316 + 10816 = 646^2 + 104^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428132.

It is not an unprimeable number, because it can be changed into a prime (428137) by changing a digit.

428132 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 as a sum of consecutive naturals, namely, 53513 + ... + 53520.

It is an arithmetic number, because the mean of its divisors is an integer number (124873).

2⁴²⁸¹³² is an apocalyptic number.

It is an amenable number.

428132 is a deficient number, since it is larger than the sum of its proper divisors (321106).

428132 is a wasteful number, since it uses less digits than its factorization.

428132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107037 (or 107035 counting only the distinct ones).

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

The square root of 428132 is about 654.3179655183. The cubic root of 428132 is about 75.3689670528.

Adding to 428132 its reverse (231824), we get a palindrome (659956).

The spelling of 428132 in words is "four hundred twenty-eight thousand, one hundred thirty-two".