28972167 has 16 divisors (see below), whose sum is σ = 44755200. Its totient is φ = 16327872.

The previous prime is 28972159. The next prime is 28972193. The reversal of 28972167 is 76127982.

It is not a de Polignac number, because 28972167 - 2³ = 28972159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28972367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7917 + ... + 10982.

It is an arithmetic number, because the mean of its divisors is an integer number (2797200).

Almost surely, 2^28972167 is an apocalyptic number.

28972167 is a deficient number, since it is larger than the sum of its proper divisors (15783033).

28972167 is a wasteful number, since it uses less digits than its factorization.

28972167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18982.

The product of its digits is 84672, while the sum is 42.

The square root of 28972167 is about 5382.5799576040. The cubic root of 28972167 is about 307.1333616885.

The spelling of 28972167 in words is "twenty-eight million, nine hundred seventy-two thousand, one hundred sixty-seven".