1428305203 has 8 divisors (see below), whose sum is σ = 1549242800. Its totient is φ = 1308948768.

The previous prime is 1428305189. The next prime is 1428305213. The reversal of 1428305203 is 3025038241.

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

It is a cyclic number.

It is not a de Polignac number, because 1428305203 - 2⁵ = 1428305171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428305213) 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, 393408 + ... + 397021.

It is an arithmetic number, because the mean of its divisors is an integer number (193655350).

Almost surely, 2^1428305203 is an apocalyptic number.

1428305203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1428305203 is a deficient number, since it is larger than the sum of its proper divisors (120937597).

1428305203 is a wasteful number, since it uses less digits than its factorization.

1428305203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790581.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1428305203 is about 37792.9253035538. The cubic root of 1428305203 is about 1126.1779143672.

The spelling of 1428305203 in words is "one billion, four hundred twenty-eight million, three hundred five thousand, two hundred three".