28142168 has 16 divisors (see below), whose sum is σ = 52855080. Its totient is φ = 14047488.

The previous prime is 28142161. The next prime is 28142183. The reversal of 28142168 is 86124182.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28142161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2771 + ... + 7997.

Almost surely, 2^28142168 is an apocalyptic number.

It is an amenable number.

28142168 is a deficient number, since it is larger than the sum of its proper divisors (24712912).

28142168 is a wasteful number, since it uses less digits than its factorization.

28142168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5906 (or 5902 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 28142168 is about 5304.9192265293. The cubic root of 28142168 is about 304.1719652629.

The spelling of 28142168 in words is "twenty-eight million, one hundred forty-two thousand, one hundred sixty-eight".