28259112 has 64 divisors (see below), whose sum is σ = 82137600. Its totient is φ = 7934400.

The previous prime is 28259089. The next prime is 28259113. The reversal of 28259112 is 21195282.

It is a super-2 number, since 2×28259112² = 1597154822057088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28259112.

It is not an unprimeable number, because it can be changed into a prime (28259113) 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 15 ways as a sum of consecutive naturals, for example, 8487 + ... + 11337.

It is an arithmetic number, because the mean of its divisors is an integer number (1283400).

Almost surely, 2^28259112 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 28259112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41068800).

28259112 is an abundant number, since it is smaller than the sum of its proper divisors (53878488).

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

28259112 is a wasteful number, since it uses less digits than its factorization.

28259112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926 (or 2922 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 28259112 is about 5315.9300221128. The cubic root of 28259112 is about 304.5927090637.

The spelling of 28259112 in words is "twenty-eight million, two hundred fifty-nine thousand, one hundred twelve".