28127112 has 64 divisors (see below), whose sum is σ = 80196480. Its totient is φ = 8143872.

The previous prime is 28127111. The next prime is 28127159. The reversal of 28127112 is 21172182.

It is a super-2 number, since 2×28127112² = 1582268858921088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (28127111) 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, 2653 + ... + 7955.

It is an arithmetic number, because the mean of its divisors is an integer number (1253070).

Almost surely, 2^28127112 is an apocalyptic number.

It is a pronic number, being equal to 5303×5304.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28127112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40098240).

28127112 is an abundant number, since it is smaller than the sum of its proper divisors (52069368).

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

28127112 is a wasteful number, since it uses less digits than its factorization.

28127112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342 (or 5338 counting only the distinct ones).

The product of its digits is 448, while the sum is 24.

The square root of 28127112 is about 5303.4999764307. The cubic root of 28127112 is about 304.1177118018.

Adding to 28127112 its reverse (21172182), we get a palindrome (49299294).

The spelling of 28127112 in words is "twenty-eight million, one hundred twenty-seven thousand, one hundred twelve".