20734 has 8 divisors (see below), whose sum is σ = 35568. Its totient is φ = 8880.

The previous prime is 20731. The next prime is 20743. The reversal of 20734 is 43702.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20731) 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, 727 + ... + 754.

It is an arithmetic number, because the mean of its divisors is an integer number (4446).

2²⁰⁷³⁴ is an apocalyptic number.

20734 is a deficient number, since it is larger than the sum of its proper divisors (14834).

20734 is a wasteful number, since it uses less digits than its factorization.

20734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 20734 is about 143.9930553881. The cubic root of 20734 is about 27.4722585257.

Adding to 20734 its product of nonzero digits (168), we get a palindrome (20902).

The spelling of 20734 in words is "twenty thousand, seven hundred thirty-four".