20926 has 4 divisors (see below), whose sum is σ = 31392. Its totient is φ = 10462.

The previous prime is 20921. The next prime is 20929. The reversal of 20926 is 62902.

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

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5230 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (7848).

2²⁰⁹²⁶ is an apocalyptic number.

20926 is a deficient number, since it is larger than the sum of its proper divisors (10466).

20926 is a wasteful number, since it uses less digits than its factorization.

20926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10465.

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

The square root of 20926 is about 144.6582178792. The cubic root of 20926 is about 27.5567972135.

It can be divided in two parts, 20 and 926, that added together give a triangular number (946 = T₄₃).

The spelling of 20926 in words is "twenty thousand, nine hundred twenty-six".