28829 has 4 divisors (see below), whose sum is σ = 29184. Its totient is φ = 28476.

The previous prime is 28817. The next prime is 28837. The reversal of 28829 is 92882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92882 = 2 ⋅46441.

It is a cyclic number.

It is not a de Polignac number, because 28829 - 2⁴ = 28813 is a prime.

It is a super-2 number, since 2×28829² = 1662222482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28829.

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 3 ways as a sum of consecutive naturals, for example, 14 + ... + 240.

It is an arithmetic number, because the mean of its divisors is an integer number (7296).

2²⁸⁸²⁹ is an apocalyptic number.

It is an amenable number.

28829 is a deficient number, since it is larger than the sum of its proper divisors (355).

28829 is a wasteful number, since it uses less digits than its factorization.

28829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354.

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

The square root of 28829 is about 169.7910480561. The cubic root of 28829 is about 30.6626622581.

The spelling of 28829 in words is "twenty-eight thousand, eight hundred twenty-nine".