28251 has 12 divisors (see below), whose sum is σ = 42328. Its totient is φ = 18144.

The previous prime is 28229. The next prime is 28277. The reversal of 28251 is 15282.

It is not a de Polignac number, because 28251 - 2⁵ = 28219 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28251.

It is not an unprimeable number, because it can be changed into a prime (28201) 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, 351 + ... + 423.

2²⁸²⁵¹ is an apocalyptic number.

28251 is a deficient number, since it is larger than the sum of its proper divisors (14077).

28251 is a wasteful number, since it uses less digits than its factorization.

28251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 119 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 28251 is about 168.0803379340. The cubic root of 28251 is about 30.4563561032.

It can be divided in two parts, 282 and 51, that added together give a palindrome (333).

The spelling of 28251 in words is "twenty-eight thousand, two hundred fifty-one".