28500768 has 48 divisors (see below), whose sum is σ = 83129760. Its totient is φ = 9499968.

The previous prime is 28500763. The next prime is 28500827. The reversal of 28500768 is 86700582.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28500763) 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 7 ways as a sum of consecutive naturals, for example, 15630 + ... + 17357.

It is an arithmetic number, because the mean of its divisors is an integer number (1731870).

Almost surely, 2^28500768 is an apocalyptic number.

It is an amenable number.

28500768 is an abundant number, since it is smaller than the sum of its proper divisors (54628992).

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

28500768 is a wasteful number, since it uses less digits than its factorization.

28500768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33006 (or 32992 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 28500768 is about 5338.6110553214. The cubic root of 28500768 is about 305.4584809326.

The spelling of 28500768 in words is "twenty-eight million, five hundred thousand, seven hundred sixty-eight".