28875168 has 72 divisors (see below), whose sum is σ = 93850848. Its totient is φ = 8249472.

The previous prime is 28875113. The next prime is 28875169. The reversal of 28875168 is 86157882.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (28875169) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5146 + ... + 9177.

It is an arithmetic number, because the mean of its divisors is an integer number (1303484).

Almost surely, 2^28875168 is an apocalyptic number.

28875168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28875168 is an abundant number, since it is smaller than the sum of its proper divisors (64975680).

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

28875168 is a wasteful number, since it uses less digits than its factorization.

28875168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14346 (or 14335 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 28875168 is about 5373.5619471632. The cubic root of 28875168 is about 306.7902169679.

The spelling of 28875168 in words is "twenty-eight million, eight hundred seventy-five thousand, one hundred sixty-eight".