28559168 has 56 divisors (see below), whose sum is σ = 62544960. Its totient is φ = 12830720.

The previous prime is 28559143. The next prime is 28559183. The reversal of 28559168 is 86195582.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79373 + ... + 79731.

Almost surely, 2^28559168 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 28559168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31272480).

28559168 is an abundant number, since it is smaller than the sum of its proper divisors (33985792).

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

28559168 is a wasteful number, since it uses less digits than its factorization.

28559168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 485 counting only the distinct ones).

The product of its digits is 172800, while the sum is 44.

The square root of 28559168 is about 5344.0778437444. The cubic root of 28559168 is about 305.6669736166. Note that the first 3 decimals are identical.

The spelling of 28559168 in words is "twenty-eight million, five hundred fifty-nine thousand, one hundred sixty-eight".