20344 has 8 divisors (see below), whose sum is σ = 38160. Its totient is φ = 10168.

The previous prime is 20341. The next prime is 20347. The reversal of 20344 is 44302.

It is an interprime number because it is at equal distance from previous prime (20341) and next prime (20347).

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264 + ... + 1279.

It is an arithmetic number, because the mean of its divisors is an integer number (4770).

2²⁰³⁴⁴ is an apocalyptic number.

It is an amenable number.

20344 is a deficient number, since it is larger than the sum of its proper divisors (17816).

20344 is a wasteful number, since it uses less digits than its factorization.

20344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20344 is about 142.6323946374. The cubic root of 20344 is about 27.2989189462.

Adding to 20344 its reverse (44302), we get a palindrome (64646).

The spelling of 20344 in words is "twenty thousand, three hundred forty-four", and thus it is an iban number.