15912 has 48 divisors (see below), whose sum is σ = 49140. Its totient is φ = 4608.

The previous prime is 15907. The next prime is 15913. The reversal of 15912 is 21951.

15912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15876 + 36 = 126^2 + 6^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

15912 is a Rhonda number in base 16.

It is a plaindrome in base 15.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15913) by changing a digit.

15912 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 928 + ... + 944.

2¹⁵⁹¹² is an apocalyptic number.

15912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24570).

15912 is an abundant number, since it is smaller than the sum of its proper divisors (33228).

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

15912 is a wasteful number, since it uses less digits than its factorization.

15912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42 (or 35 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 15912 is about 126.1427762498. The cubic root of 15912 is about 25.1521389383.

It can be divided in two parts, 159 and 12, that added together give a palindrome (171).

The spelling of 15912 in words is "fifteen thousand, nine hundred twelve".