28647168 has 72 divisors (see below), whose sum is σ = 83198976. Its totient is φ = 8678400.

The previous prime is 28647161. The next prime is 28647191. The reversal of 28647168 is 86174682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28647161) 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, 6753 + ... + 10143.

Almost surely, 2^28647168 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 28647168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41599488).

28647168 is an abundant number, since it is smaller than the sum of its proper divisors (54551808).

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

28647168 is a wasteful number, since it uses less digits than its factorization.

28647168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3407 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 28647168 is about 5352.3049240491. The cubic root of 28647168 is about 305.9806045206.

The spelling of 28647168 in words is "twenty-eight million, six hundred forty-seven thousand, one hundred sixty-eight".