20793 has 8 divisors (see below), whose sum is σ = 28800. Its totient is φ = 13328.

The previous prime is 20789. The next prime is 20807. The reversal of 20793 is 39702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20793 - 2² = 20789 is a prime.

20793 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (20743) 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 7 ways as a sum of consecutive naturals, for example, 33 + ... + 206.

It is an arithmetic number, because the mean of its divisors is an integer number (3600).

2²⁰⁷⁹³ is an apocalyptic number.

It is an amenable number.

20793 is a deficient number, since it is larger than the sum of its proper divisors (8007).

20793 is a wasteful number, since it uses less digits than its factorization.

20793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 20793 is about 144.1977808428. The cubic root of 20793 is about 27.4982919049.

It can be divided in two parts, 207 and 93, that added together give a triangular number (300 = T₂₄).

The spelling of 20793 in words is "twenty thousand, seven hundred ninety-three".