423928 has 16 divisors (see below), whose sum is σ = 837000. Its totient is φ = 200736.

The previous prime is 423887. The next prime is 423931. The reversal of 423928 is 829324.

It is a junction number, because it is equal to n+sod(n) for n = 423896 and 423905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243 + ... + 1546.

2⁴²³⁹²⁸ is an apocalyptic number.

It is an amenable number.

423928 is a deficient number, since it is larger than the sum of its proper divisors (413072).

423928 is a wasteful number, since it uses less digits than its factorization.

423928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814 (or 2810 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 423928 is about 651.0975349362. The cubic root of 423928 is about 75.1214624447.

It can be divided in two parts, 4 and 23928, that added together give a palindrome (23932).

The spelling of 423928 in words is "four hundred twenty-three thousand, nine hundred twenty-eight".