28851 has 8 divisors (see below), whose sum is σ = 39360. Its totient is φ = 18792.

The previous prime is 28843. The next prime is 28859. The reversal of 28851 is 15882.

It is an interprime number because it is at equal distance from previous prime (28843) and next prime (28859).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28851 - 2³ = 28843 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28851.

It is not an unprimeable number, because it can be changed into a prime (28859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96 + ... + 258.

It is an arithmetic number, because the mean of its divisors is an integer number (4920).

2²⁸⁸⁵¹ is an apocalyptic number.

28851 is a deficient number, since it is larger than the sum of its proper divisors (10509).

28851 is a wasteful number, since it uses less digits than its factorization.

28851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225.

The product of its digits is 640, while the sum is 24.

The square root of 28851 is about 169.8558212132. The cubic root of 28851 is about 30.6704600432.

The spelling of 28851 in words is "twenty-eight thousand, eight hundred fifty-one".