28298 has 4 divisors (see below), whose sum is σ = 42450. Its totient is φ = 14148.

The previous prime is 28297. The next prime is 28307. The reversal of 28298 is 89282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89282 = 2 ⋅44641.

It can be written as a sum of positive squares in only one way, i.e., 17689 + 10609 = 133^2 + 103^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28298.

It is not an unprimeable number, because it can be changed into a prime (28297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7073 + ... + 7076.

2²⁸²⁹⁸ is an apocalyptic number.

28298 is a deficient number, since it is larger than the sum of its proper divisors (14152).

28298 is a wasteful number, since it uses less digits than its factorization.

28298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151.

The product of its digits is 2304, while the sum is 29.

The square root of 28298 is about 168.2200939246. The cubic root of 28298 is about 30.4732363983.

The spelling of 28298 in words is "twenty-eight thousand, two hundred ninety-eight".