28500112 has 20 divisors (see below), whose sum is σ = 55302016. Its totient is φ = 14228640.

The previous prime is 28500107. The next prime is 28500113. The reversal of 28500112 is 21100582.

It is a self number, because there is not a number n which added to its sum of digits gives 28500112.

It is not an unprimeable number, because it can be changed into a prime (28500113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18973 + ... + 20419.

Almost surely, 2^28500112 is an apocalyptic number.

It is an amenable number.

28500112 is a deficient number, since it is larger than the sum of its proper divisors (26801904).

28500112 is a wasteful number, since it uses less digits than its factorization.

28500112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686 (or 2680 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 28500112 is about 5338.5496157664. The cubic root of 28500112 is about 305.4561373431.

Adding to 28500112 its reverse (21100582), we get a palindrome (49600694).

The spelling of 28500112 in words is "twenty-eight million, five hundred thousand, one hundred twelve".