28173167 has 8 divisors (see below), whose sum is σ = 30892752. Its totient is φ = 25480000.

The previous prime is 28173161. The next prime is 28173209. The reversal of 28173167 is 76137182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28173167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28173161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4334 + ... + 8667.

It is an arithmetic number, because the mean of its divisors is an integer number (3861594).

Almost surely, 2^28173167 is an apocalyptic number.

28173167 is the 4334-th pentagonal number.

28173167 is a deficient number, since it is larger than the sum of its proper divisors (2719585).

28173167 is a wasteful number, since it uses less digits than its factorization.

28173167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13209.

The product of its digits is 14112, while the sum is 35.

The square root of 28173167 is about 5307.8401445409. The cubic root of 28173167 is about 304.2836075358.

The spelling of 28173167 in words is "twenty-eight million, one hundred seventy-three thousand, one hundred sixty-seven".