28758168 has 48 divisors (see below), whose sum is σ = 78507000. Its totient is φ = 9509760.

The previous prime is 28758167. The next prime is 28758181. The reversal of 28758168 is 86185782.

28758168 is a `hidden beast` number, since 2 + 8 + 7 + 581 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28758167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7908 + ... + 10956.

Almost surely, 2^28758168 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 28758168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39253500).

28758168 is an abundant number, since it is smaller than the sum of its proper divisors (49748832).

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

28758168 is a wasteful number, since it uses less digits than its factorization.

28758168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3185 counting only the distinct ones).

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

The square root of 28758168 is about 5362.6642632184. The cubic root of 28758168 is about 306.3752924515.

The spelling of 28758168 in words is "twenty-eight million, seven hundred fifty-eight thousand, one hundred sixty-eight".