428803 has 4 divisors (see below), whose sum is σ = 430920. Its totient is φ = 426688.

The previous prime is 428801. The next prime is 428807. The reversal of 428803 is 308824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428803 - 2¹ = 428801 is a prime.

It is a Duffinian number.

428803 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (428801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (107730).

2⁴²⁸⁸⁰³ is an apocalyptic number.

428803 is a deficient number, since it is larger than the sum of its proper divisors (2117).

428803 is a wasteful number, since it uses less digits than its factorization.

428803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 428803 is about 654.8305124229. The cubic root of 428803 is about 75.4083210990.

The spelling of 428803 in words is "four hundred twenty-eight thousand, eight hundred three".