28285271303 has 4 divisors (see below), whose sum is σ = 28288766688. Its totient is φ = 28281775920.

The previous prime is 28285271299. The next prime is 28285271309. The reversal of 28285271303 is 30317258282.

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 28285271303 - 2² = 28285271299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285271309) 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, 1735526 + ... + 1751747.

It is an arithmetic number, because the mean of its divisors is an integer number (7072191672).

Almost surely, 2^28285271303 is an apocalyptic number.

28285271303 is a deficient number, since it is larger than the sum of its proper divisors (3495385).

28285271303 is an equidigital number, since it uses as much as digits as its factorization.

28285271303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495384.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 28285271303 in words is "twenty-eight billion, two hundred eighty-five million, two hundred seventy-one thousand, three hundred three".