28858161 has 16 divisors (see below), whose sum is σ = 40262400. Its totient is φ = 18361728.

The previous prime is 28858157. The next prime is 28858177. The reversal of 28858161 is 16185882.

It is not a de Polignac number, because 28858161 - 2² = 28858157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28858111) 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 15 ways as a sum of consecutive naturals, for example, 5880 + ... + 9606.

It is an arithmetic number, because the mean of its divisors is an integer number (2516400).

Almost surely, 2^28858161 is an apocalyptic number.

It is an amenable number.

28858161 is a deficient number, since it is larger than the sum of its proper divisors (11404239).

28858161 is a wasteful number, since it uses less digits than its factorization.

28858161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848.

The product of its digits is 30720, while the sum is 39.

The square root of 28858161 is about 5371.9792441892. The cubic root of 28858161 is about 306.7299736715.

The spelling of 28858161 in words is "twenty-eight million, eight hundred fifty-eight thousand, one hundred sixty-one".