28161166 has 16 divisors (see below), whose sum is σ = 46293120. Its totient is φ = 12741880.

The previous prime is 28161151. The next prime is 28161167. The reversal of 28161166 is 66116182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28161167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2175 + ... + 7813.

It is an arithmetic number, because the mean of its divisors is an integer number (2893320).

Almost surely, 2^28161166 is an apocalyptic number.

28161166 is a deficient number, since it is larger than the sum of its proper divisors (18131954).

28161166 is a wasteful number, since it uses less digits than its factorization.

28161166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879.

The product of its digits is 3456, while the sum is 31.

The square root of 28161166 is about 5306.7095266276. The cubic root of 28161166 is about 304.2403958963.

The spelling of 28161166 in words is "twenty-eight million, one hundred sixty-one thousand, one hundred sixty-six".