19716 has 24 divisors (see below), whose sum is σ = 48384. Its totient is φ = 6240.

The previous prime is 19709. The next prime is 19717. The reversal of 19716 is 61791.

It is not an unprimeable number, because it can be changed into a prime (19717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346 + ... + 398.

It is an arithmetic number, because the mean of its divisors is an integer number (2016).

2¹⁹⁷¹⁶ is an apocalyptic number.

It is an amenable number.

19716 is an abundant number, since it is smaller than the sum of its proper divisors (28668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192).

19716 is a wasteful number, since it uses less digits than its factorization.

19716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 89 counting only the distinct ones).

The product of its digits is 378, while the sum is 24.

The square root of 19716 is about 140.4136745477. The cubic root of 19716 is about 27.0150807384.

The spelling of 19716 in words is "nineteen thousand, seven hundred sixteen".