28227168 has 36 divisors (see below), whose sum is σ = 80271828. Its totient is φ = 9408960.

The previous prime is 28227163. The next prime is 28227169. The reversal of 28227168 is 86172282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28227163) 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 5 ways as a sum of consecutive naturals, for example, 48718 + ... + 49293.

It is an arithmetic number, because the mean of its divisors is an integer number (2229773).

Almost surely, 2^28227168 is an apocalyptic number.

It is an amenable number.

28227168 is an abundant number, since it is smaller than the sum of its proper divisors (52044660).

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

28227168 is a wasteful number, since it uses less digits than its factorization.

28227168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98027 (or 98016 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 28227168 is about 5312.9246183246. The cubic root of 28227168 is about 304.4778956185.

The spelling of 28227168 in words is "twenty-eight million, two hundred twenty-seven thousand, one hundred sixty-eight".