28168008 has 64 divisors (see below), whose sum is σ = 80179200. Its totient is φ = 8162880.

The previous prime is 28167947. The next prime is 28168009. The reversal of 28168008 is 80086182.

28168008 = T₄₇ + T₄₈ + ... + T₅₅₂.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 28168008.

It is not an unprimeable number, because it can be changed into a prime (28168009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3753 + ... + 8391.

It is an arithmetic number, because the mean of its divisors is an integer number (1252800).

Almost surely, 2^28168008 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 28168008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40089600).

28168008 is an abundant number, since it is smaller than the sum of its proper divisors (52011192).

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

28168008 is a wasteful number, since it uses less digits than its factorization.

28168008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682 (or 4678 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 28168008 is about 5307.3541430736. The cubic root of 28168008 is about 304.2650331838.

The spelling of 28168008 in words is "twenty-eight million, one hundred sixty-eight thousand, eight".