428203803 has 16 divisors (see below), whose sum is σ = 606074400. Its totient is φ = 267987456.

The previous prime is 428203781. The next prime is 428203813. The reversal of 428203803 is 308302824.

It is not a de Polignac number, because 428203803 - 2⁸ = 428203547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428203813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9673 + ... + 30821.

It is an arithmetic number, because the mean of its divisors is an integer number (37879650).

Almost surely, 2^428203803 is an apocalyptic number.

428203803 is a deficient number, since it is larger than the sum of its proper divisors (177870597).

428203803 is a wasteful number, since it uses less digits than its factorization.

428203803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21566.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 428203803 is about 20693.0858742721. The cubic root of 428203803 is about 753.7318025138.

The spelling of 428203803 in words is "four hundred twenty-eight million, two hundred three thousand, eight hundred three".