20296 has 16 divisors (see below), whose sum is σ = 39600. Its totient is φ = 9744.

The previous prime is 20287. The next prime is 20297. The reversal of 20296 is 69202.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315 + ... + 373.

It is an arithmetic number, because the mean of its divisors is an integer number (2475).

2²⁰²⁹⁶ is an apocalyptic number.

It is an amenable number.

20296 is a deficient number, since it is larger than the sum of its proper divisors (19304).

20296 is a wasteful number, since it uses less digits than its factorization.

20296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20296 is about 142.4640305481. The cubic root of 20296 is about 27.2774321849.

Adding to 20296 its reverse (69202), we get a palindrome (89498).

The spelling of 20296 in words is "twenty thousand, two hundred ninety-six".