428203 has 8 divisors (see below), whose sum is σ = 465920. Its totient is φ = 392040.

The previous prime is 428177. The next prime is 428221. The reversal of 428203 is 302824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a d-powerful number, because it can be written as 4⁹ + 2⁵ + 2¹⁷ + 8⁵ + 0 + 3⁷ .

It is a Duffinian number.

428203 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (428273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226 + ... + 952.

It is an arithmetic number, because the mean of its divisors is an integer number (58240).

2⁴²⁸²⁰³ is an apocalyptic number.

428203 is a deficient number, since it is larger than the sum of its proper divisors (37717).

428203 is a wasteful number, since it uses less digits than its factorization.

428203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 428203 is about 654.3722182367. The cubic root of 428203 is about 75.3731331362.

The spelling of 428203 in words is "four hundred twenty-eight thousand, two hundred three".