428003 has 2 divisors, whose sum is σ = 428004. Its totient is φ = 428002.

The previous prime is 427997. The next prime is 428023. The reversal of 428003 is 300824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428003 - 2⁶ = 427939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214001 + 214002.

It is an arithmetic number, because the mean of its divisors is an integer number (214002).

2⁴²⁸⁰⁰³ is an apocalyptic number.

428003 is a deficient number, since it is larger than the sum of its proper divisors (1).

428003 is an equidigital number, since it uses as much as digits as its factorization.

428003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 428003 is about 654.2193821647. The cubic root of 428003 is about 75.3613965111.

Adding to 428003 its reverse (300824), we get a palindrome (728827).

The spelling of 428003 in words is "four hundred twenty-eight thousand, three".