28899 has 18 divisors (see below), whose sum is σ = 47580. Its totient is φ = 16848.

The previous prime is 28879. The next prime is 28901. The reversal of 28899 is 99882.

28899 = 41² + 42² + ... + 53².

It is a Cunningham number, because it is equal to 170²-1.

It is not a de Polignac number, because 28899 - 2⁵ = 28867 is a prime.

It is a plaindrome in base 10.

It is a nialpdrome in base 14.

It is a zygodrome in base 2.

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 17 ways as a sum of consecutive naturals, for example, 1512 + ... + 1530.

2²⁸⁸⁹⁹ is an apocalyptic number.

28899 is a deficient number, since it is larger than the sum of its proper divisors (18681).

28899 is a wasteful number, since it uses less digits than its factorization.

28899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51 (or 35 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 28899 is about 169.9970587981. The cubic root of 28899 is about 30.6874596435.

The spelling of 28899 in words is "twenty-eight thousand, eight hundred ninety-nine".