20295 has 24 divisors (see below), whose sum is σ = 39312. Its totient is φ = 9600.

The previous prime is 20287. The next prime is 20297. The reversal of 20295 is 59202.

It is not a de Polignac number, because 20295 - 2³ = 20287 is a prime.

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

20295 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475 + ... + 515.

It is an arithmetic number, because the mean of its divisors is an integer number (1638).

2²⁰²⁹⁵ is an apocalyptic number.

20295 is a deficient number, since it is larger than the sum of its proper divisors (19017).

20295 is a wasteful number, since it uses less digits than its factorization.

20295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20295 is about 142.4605208470. The cubic root of 20295 is about 27.2769841840.

Adding to 20295 its reverse (59202), we get a palindrome (79497).

The spelling of 20295 in words is "twenty thousand, two hundred ninety-five".