28041112 has 64 divisors (see below), whose sum is σ = 62438400. Its totient is φ = 11664000.

The previous prime is 28041077. The next prime is 28041113. The reversal of 28041112 is 21114082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 28041112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28041113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51562 + ... + 52102.

It is an arithmetic number, because the mean of its divisors is an integer number (975600).

Almost surely, 2^28041112 is an apocalyptic number.

28041112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28041112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31219200).

28041112 is an abundant number, since it is smaller than the sum of its proper divisors (34397288).

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

28041112 is a wasteful number, since it uses less digits than its factorization.

28041112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 28041112 is about 5295.3859160594. The cubic root of 28041112 is about 303.8074438485.

Adding to 28041112 its reverse (21114082), we get a palindrome (49155194).

It can be divided in two parts, 2804 and 1112, that added together give a triangular number (3916 = T₈₈).

The spelling of 28041112 in words is "twenty-eight million, forty-one thousand, one hundred twelve".