28811108 has 12 divisors (see below), whose sum is σ = 50532972. Its totient is φ = 14373120.

The previous prime is 28811099. The next prime is 28811113. The reversal of 28811108 is 80111882.

It can be written as a sum of positive squares in 2 ways, for example, as 21883684 + 6927424 = 4678^2 + 2632^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6053 + ... + 9708.

It is an arithmetic number, because the mean of its divisors is an integer number (4211081).

Almost surely, 2^28811108 is an apocalyptic number.

It is an amenable number.

28811108 is a deficient number, since it is larger than the sum of its proper divisors (21721864).

28811108 is a wasteful number, since it uses less digits than its factorization.

28811108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16222 (or 16220 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 28811108 is about 5367.5979730229. The cubic root of 28811108 is about 306.5631760641.

The spelling of 28811108 in words is "twenty-eight million, eight hundred eleven thousand, one hundred eight".