28285475143 has 8 divisors (see below), whose sum is σ = 29974038768. Its totient is φ = 26599657344.

The previous prime is 28285475027. The next prime is 28285475209. The reversal of 28285475143 is 34157458282.

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 28285475143 - 2⁹ = 28285474631 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 (28285445143) 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, 665221 + ... + 706462.

It is an arithmetic number, because the mean of its divisors is an integer number (3746754846).

Almost surely, 2^28285475143 is an apocalyptic number.

28285475143 is a deficient number, since it is larger than the sum of its proper divisors (1688563625).

28285475143 is a wasteful number, since it uses less digits than its factorization.

28285475143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372913.

The product of its digits is 2150400, while the sum is 49.

The spelling of 28285475143 in words is "twenty-eight billion, two hundred eighty-five million, four hundred seventy-five thousand, one hundred forty-three".