15992 has 8 divisors (see below), whose sum is σ = 30000. Its totient is φ = 7992.

The previous prime is 15991. The next prime is 16001. The reversal of 15992 is 29951.

It is a happy number.

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

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992 + ... + 1007.

It is an arithmetic number, because the mean of its divisors is an integer number (3750).

2¹⁵⁹⁹² is an apocalyptic number.

It is an amenable number.

15992 is a deficient number, since it is larger than the sum of its proper divisors (14008).

15992 is a wasteful number, since it uses less digits than its factorization.

15992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005 (or 2001 counting only the distinct ones).

The product of its digits is 810, while the sum is 26.

The square root of 15992 is about 126.4594796763. The cubic root of 15992 is about 25.1942205609.

The spelling of 15992 in words is "fifteen thousand, nine hundred ninety-two".