28871108 has 24 divisors (see below), whose sum is σ = 60782400. Its totient is φ = 11721888.

The previous prime is 28871071. The next prime is 28871111. The reversal of 28871108 is 80117882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26603 + ... + 27666.

It is an arithmetic number, because the mean of its divisors is an integer number (2532600).

Almost surely, 2^28871108 is an apocalyptic number.

28871108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28871108 is an abundant number, since it is smaller than the sum of its proper divisors (31911292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28871108 is a wasteful number, since it uses less digits than its factorization.

28871108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54299 (or 54297 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 28871108 is about 5373.1841583925. The cubic root of 28871108 is about 306.7758375230.

The spelling of 28871108 in words is "twenty-eight million, eight hundred seventy-one thousand, one hundred eight".