28098 has 24 divisors (see below), whose sum is σ = 69888. Its totient is φ = 7992.

The previous prime is 28097. The next prime is 28099. The reversal of 28098 is 89082.

28098 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (28097) and next prime (28099).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28098.

It is not an unprimeable number, because it can be changed into a prime (28097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15 + ... + 237.

It is an arithmetic number, because the mean of its divisors is an integer number (2912).

2²⁸⁰⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34944).

28098 is an abundant number, since it is smaller than the sum of its proper divisors (41790).

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

28098 is a wasteful number, since it uses less digits than its factorization.

28098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 28098 is about 167.6245805364. The cubic root of 28098 is about 30.4012753389.

It can be divided in two parts, 280 and 98, that added together give a triangular number (378 = T₂₇).

The spelling of 28098 in words is "twenty-eight thousand, ninety-eight".