28248912 has 100 divisors (see below), whose sum is σ = 83182176. Its totient is φ = 9253440.

The previous prime is 28248911. The next prime is 28248937. The reversal of 28248912 is 21984282.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28248911) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 91863 + ... + 92169.

Almost surely, 2^28248912 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 28248912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41591088).

28248912 is an abundant number, since it is smaller than the sum of its proper divisors (54933264).

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

28248912 is a wasteful number, since it uses less digits than its factorization.

28248912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 383 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 28248912 is about 5314.9705549514. The cubic root of 28248912 is about 304.5560575286.

It can be divided in two parts, 282 and 48912, that added together give a palindrome (49194).

The spelling of 28248912 in words is "twenty-eight million, two hundred forty-eight thousand, nine hundred twelve".