28043168 has 12 divisors (see below), whose sum is σ = 55210050. Its totient is φ = 14021568.

The previous prime is 28043167. The next prime is 28043173. The reversal of 28043168 is 86134082.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 10837264 = 4148^2 + 3292^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 876349 = 28043168 / (2 + 8 + 0 + 4 + 3 + 1 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (28043167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438143 + ... + 438206.

Almost surely, 2^28043168 is an apocalyptic number.

It is an amenable number.

28043168 is a deficient number, since it is larger than the sum of its proper divisors (27166882).

28043168 is an equidigital number, since it uses as much as digits as its factorization.

28043168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876359 (or 876351 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28043168 is about 5295.5800437724. The cubic root of 28043168 is about 303.8148688137.

The spelling of 28043168 in words is "twenty-eight million, forty-three thousand, one hundred sixty-eight".