28518112 has 48 divisors (see below), whose sum is σ = 67949280. Its totient is φ = 11501568.

The previous prime is 28518103. The next prime is 28518121. The reversal of 28518112 is 21181582.

It is an interprime number because it is at equal distance from previous prime (28518103) and next prime (28518121).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64 + ... + 7552.

It is an arithmetic number, because the mean of its divisors is an integer number (1415610).

Almost surely, 2^28518112 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 28518112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33974640).

28518112 is an abundant number, since it is smaller than the sum of its proper divisors (39431168).

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

28518112 is a wasteful number, since it uses less digits than its factorization.

28518112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7523 (or 7515 counting only the distinct ones).

The product of its digits is 1280, while the sum is 28.

The square root of 28518112 is about 5340.2352008128. The cubic root of 28518112 is about 305.5204301123.

Adding to 28518112 its reverse (21181582), we get a palindrome (49699694).

The spelling of 28518112 in words is "twenty-eight million, five hundred eighteen thousand, one hundred twelve".