28955 has 4 divisors (see below), whose sum is σ = 34752. Its totient is φ = 23160.

The previous prime is 28949. The next prime is 28961. The reversal of 28955 is 55982.

28955 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28949) and next prime (28961).

It is not a de Polignac number, because 28955 - 2¹² = 24859 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 8⁴ + 9⁴ + 5⁴ + 5⁶ .

It is a Duffinian number.

28955 is strictly pandigital in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891 + ... + 2900.

It is an arithmetic number, because the mean of its divisors is an integer number (8688).

2²⁸⁹⁵⁵ is an apocalyptic number.

28955 is a deficient number, since it is larger than the sum of its proper divisors (5797).

28955 is an equidigital number, since it uses as much as digits as its factorization.

28955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5796.

The product of its digits is 3600, while the sum is 29.

The square root of 28955 is about 170.1616878149. The cubic root of 28955 is about 30.7072687362.

The spelling of 28955 in words is "twenty-eight thousand, nine hundred fifty-five".