20093 has 4 divisors (see below), whose sum is σ = 20448. Its totient is φ = 19740.

The previous prime is 20089. The next prime is 20101. The reversal of 20093 is 39002.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 39002 = 2 ⋅19501.

It is a cyclic number.

It is not a de Polignac number, because 20093 - 2² = 20089 is a prime.

It is a nialpdrome in base 12.

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 20093.

It is not an unprimeable number, because it can be changed into a prime (20023) 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, 71 + ... + 212.

It is an arithmetic number, because the mean of its divisors is an integer number (5112).

2²⁰⁰⁹³ is an apocalyptic number.

It is an amenable number.

20093 is a deficient number, since it is larger than the sum of its proper divisors (355).

20093 is an equidigital number, since it uses as much as digits as its factorization.

20093 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 (nonzero) digits is 54, while the sum is 14.

The square root of 20093 is about 141.7497795413. The cubic root of 20093 is about 27.1861845931.

Adding to 20093 its reverse (39002), we get a palindrome (59095).

The spelling of 20093 in words is "twenty thousand, ninety-three".