28427112 has 96 divisors (see below), whose sum is σ = 91291200. Its totient is φ = 8118144.

The previous prime is 28427107. The next prime is 28427117. The reversal of 28427112 is 21172482.

It is an interprime number because it is at equal distance from previous prime (28427107) and next prime (28427117).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28427117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12564 + ... + 14652.

It is an arithmetic number, because the mean of its divisors is an integer number (950950).

Almost surely, 2^28427112 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 28427112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45645600).

28427112 is an abundant number, since it is smaller than the sum of its proper divisors (62864088).

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

28427112 is a wasteful number, since it uses less digits than its factorization.

28427112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117 (or 2101 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 28427112 is about 5331.7081690580. The cubic root of 28427112 is about 305.1951165747.

Adding to 28427112 its reverse (21172482), we get a palindrome (49599594).

The spelling of 28427112 in words is "twenty-eight million, four hundred twenty-seven thousand, one hundred twelve".