28260112 has 20 divisors (see below), whose sum is σ = 54841356. Its totient is φ = 14107520.

The previous prime is 28260109. The next prime is 28260161. The reversal of 28260112 is 21106282.

It can be written as a sum of positive squares in 2 ways, for example, as 17606416 + 10653696 = 4196^2 + 3264^2 .

It is an unprimeable number.

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, 14118 + ... + 15994.

Almost surely, 2^28260112 is an apocalyptic number.

It is an amenable number.

28260112 is a deficient number, since it is larger than the sum of its proper divisors (26581244).

28260112 is a wasteful number, since it uses less digits than its factorization.

28260112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826 (or 2820 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28260112 is about 5316.0240781998. The cubic root of 28260112 is about 304.5963018767.

Adding to 28260112 its reverse (21106282), we get a palindrome (49366394).

The spelling of 28260112 in words is "twenty-eight million, two hundred sixty thousand, one hundred twelve".