29005 has 4 divisors (see below), whose sum is σ = 34812. Its totient is φ = 23200.

The previous prime is 28979. The next prime is 29009. The reversal of 29005 is 50092.

29005 is nontrivially palindromic in base 4.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21609 + 7396 = 147^2 + 86^2 .

It is not a de Polignac number, because 29005 - 2⁹ = 28493 is a prime.

It is a Duffinian number.

29005 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 29005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29009) 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, 2896 + ... + 2905.

It is an arithmetic number, because the mean of its divisors is an integer number (8703).

2²⁹⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

29005 is a deficient number, since it is larger than the sum of its proper divisors (5807).

29005 is an equidigital number, since it uses as much as digits as its factorization.

29005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5806.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 29005 is about 170.3085435320. The cubic root of 29005 is about 30.7249338547.

Adding to 29005 its reverse (50092), we get a palindrome (79097).

The spelling of 29005 in words is "twenty-nine thousand, five".