28801104 has 40 divisors (see below), whose sum is σ = 74920800. Its totient is φ = 9533568.

The previous prime is 28801063. The next prime is 28801117. The reversal of 28801104 is 40110882.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5139 + ... + 9165.

It is an arithmetic number, because the mean of its divisors is an integer number (1873020).

Almost surely, 2^28801104 is an apocalyptic number.

28801104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28801104 is an abundant number, since it is smaller than the sum of its proper divisors (46119696).

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

28801104 is a wasteful number, since it uses less digits than its factorization.

28801104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187 (or 4181 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 28801104 is about 5366.6660041407. Note that the first 3 decimals coincide. The cubic root of 28801104 is about 306.5276896000.

Adding to 28801104 its reverse (40110882), we get a palindrome (68911986).

The spelling of 28801104 in words is "twenty-eight million, eight hundred one thousand, one hundred four".