28320801203 has 4 divisors (see below), whose sum is σ = 28354964640. Its totient is φ = 28286637768.

The previous prime is 28320801193. The next prime is 28320801217. The reversal of 28320801203 is 30210802382.

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 28320801203 - 2¹² = 28320797107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28320801263) 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, 17080475 + ... + 17082132.

It is an arithmetic number, because the mean of its divisors is an integer number (7088741160).

Almost surely, 2^28320801203 is an apocalyptic number.

28320801203 is a deficient number, since it is larger than the sum of its proper divisors (34163437).

28320801203 is an equidigital number, since it uses as much as digits as its factorization.

28320801203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34163436.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 28320801203 in words is "twenty-eight billion, three hundred twenty million, eight hundred one thousand, two hundred three".