28285475167 has 4 divisors (see below), whose sum is σ = 28286549136. Its totient is φ = 28284401200.

The previous prime is 28285475027. The next prime is 28285475209. The reversal of 28285475167 is 76157458282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28285475167 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 (28285472167) 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, 496459 + ... + 550492.

It is an arithmetic number, because the mean of its divisors is an integer number (7071637284).

Almost surely, 2^28285475167 is an apocalyptic number.

28285475167 is a deficient number, since it is larger than the sum of its proper divisors (1073969).

28285475167 is a wasteful number, since it uses less digits than its factorization.

28285475167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073968.

The product of its digits is 7526400, while the sum is 55.

The spelling of 28285475167 in words is "twenty-eight billion, two hundred eighty-five million, four hundred seventy-five thousand, one hundred sixty-seven".