28167568 has 60 divisors (see below), whose sum is σ = 64536048. Its totient is φ = 11806080.

The previous prime is 28167511. The next prime is 28167569. The reversal of 28167568 is 86576182.

It is not an unprimeable number, because it can be changed into a prime (28167569) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 29271 + ... + 30217.

Almost surely, 2^28167568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28167568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32268024).

28167568 is an abundant number, since it is smaller than the sum of its proper divisors (36368480).

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

28167568 is a wasteful number, since it uses less digits than its factorization.

28167568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 973 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 28167568 is about 5307.3126909953. The cubic root of 28167568 is about 304.2634489124.

The spelling of 28167568 in words is "twenty-eight million, one hundred sixty-seven thousand, five hundred sixty-eight".