28250 has 16 divisors (see below), whose sum is σ = 53352. Its totient is φ = 11200.

The previous prime is 28229. The next prime is 28277. The reversal of 28250 is 5282.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1681 + 26569 = 41^2 + 163^2 .

28250 is an undulating number in base 15.

It is a Curzon number.

It is a nialpdrome in base 13.

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, 194 + ... + 306.

2²⁸²⁵⁰ is an apocalyptic number.

28250 is a deficient number, since it is larger than the sum of its proper divisors (25102).

28250 is a wasteful number, since it uses less digits than its factorization.

28250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 28250 is about 168.0773631397. The cubic root of 28250 is about 30.4559967446.

The spelling of 28250 in words is "twenty-eight thousand, two hundred fifty".