28257300203 has 8 divisors (see below), whose sum is σ = 31820537856. Its totient is φ = 24859794600.

The previous prime is 28257300179. The next prime is 28257300217. The reversal of 28257300203 is 30200375282.

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 28257300203 - 2²⁰ = 28256251627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28257300203.

It is not an unprimeable number, because it can be changed into a prime (28257300103) 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 7 ways as a sum of consecutive naturals, for example, 41432651 + ... + 41433332.

It is an arithmetic number, because the mean of its divisors is an integer number (3977567232).

Almost surely, 2^28257300203 is an apocalyptic number.

28257300203 is a deficient number, since it is larger than the sum of its proper divisors (3563237653).

28257300203 is a wasteful number, since it uses less digits than its factorization.

28257300203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82866025.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 28257300203 its reverse (30200375282), we get a palindrome (58457675485).

The spelling of 28257300203 in words is "twenty-eight billion, two hundred fifty-seven million, three hundred thousand, two hundred three".