28101168 has 50 divisors (see below), whose sum is σ = 81336684. Its totient is φ = 9366624.

The previous prime is 28101149. The next prime is 28101173. The reversal of 28101168 is 86110182.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9546 + ... + 12137.

Almost surely, 2^28101168 is an apocalyptic number.

It is an amenable number.

28101168 is an abundant number, since it is smaller than the sum of its proper divisors (53235516).

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

28101168 is a wasteful number, since it uses less digits than its factorization.

28101168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21703 (or 21688 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 28101168 is about 5301.0534802056. The cubic root of 28101168 is about 304.0241785940.

The spelling of 28101168 in words is "twenty-eight million, one hundred one thousand, one hundred sixty-eight".