28801108 has 24 divisors (see below), whose sum is σ = 59462144. Its totient is φ = 11944800.

The previous prime is 28801063. The next prime is 28801117. The reversal of 28801108 is 80110882.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15723 + ... + 17458.

Almost surely, 2^28801108 is an apocalyptic number.

28801108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28801108 is an abundant number, since it is smaller than the sum of its proper divisors (30661036).

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

28801108 is a wasteful number, since it uses less digits than its factorization.

28801108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33223 (or 33221 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 28801108 is about 5366.6663768116. Note that the first 3 decimals coincide. The cubic root of 28801108 is about 306.5277037906.

It can be divided in two parts, 2 and 8801108, that added together give a triangular number (8801110 = T₄₁₉₅).

The spelling of 28801108 in words is "twenty-eight million, eight hundred one thousand, one hundred eight".