28056167 has 8 divisors (see below), whose sum is σ = 28887936.
Its totient is φ = 27232632.
The previous prime is 28056143. The next prime is 28056187. The reversal of 28056167 is 76165082.
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 28056167 - 210 = 28055143 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 (28056187) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5228 + ... + 9134.
It is an arithmetic number, because the mean of its divisors is an integer number (3610992).
Almost surely, 228056167 is an apocalyptic number.
28056167 is a deficient number, since it is larger than the sum of its proper divisors (831769).
28056167 is a wasteful number, since it uses less digits than its factorization.
28056167 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4117.
The product of its (nonzero) digits is 20160, while the sum is 35.
The square root of 28056167 is about 5296.8072458794.
The cubic root of 28056167 is about 303.8618045406.
The spelling of 28056167 in words is "twenty-eight million, fifty-six thousand, one hundred sixty-seven".