28175161 has 16 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 22915728.

The previous prime is 28175141. The next prime is 28175177. The reversal of 28175161 is 16157182.

It is not a de Polignac number, because 28175161 - 2⁵ = 28175129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28175101) 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, 21750 + ... + 23008.

It is an arithmetic number, because the mean of its divisors is an integer number (2116800).

Almost surely, 2^28175161 is an apocalyptic number.

It is an amenable number.

28175161 is a deficient number, since it is larger than the sum of its proper divisors (5693639).

28175161 is a wasteful number, since it uses less digits than its factorization.

28175161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428.

The product of its digits is 3360, while the sum is 31.

The square root of 28175161 is about 5308.0279765653. The cubic root of 28175161 is about 304.2907860826.

The spelling of 28175161 in words is "twenty-eight million, one hundred seventy-five thousand, one hundred sixty-one".