28000112 has 60 divisors (see below), whose sum is σ = 63902160. Its totient is φ = 11641344.

The previous prime is 28000097. The next prime is 28000121. The reversal of 28000112 is 21100082.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314564 + ... + 314652.

It is an arithmetic number, because the mean of its divisors is an integer number (1065036).

Almost surely, 2^28000112 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 28000112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31951080).

28000112 is an abundant number, since it is smaller than the sum of its proper divisors (35902048).

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

28000112 is an equidigital number, since it uses as much as digits as its factorization.

28000112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 28000112 is about 5291.5132051238. The cubic root of 28000112 is about 303.6593020656.

Adding to 28000112 its reverse (21100082), we get a palindrome (49100194).

The spelling of 28000112 in words is "twenty-eight million, one hundred twelve", and thus it is an aban number.