15960 has 64 divisors (see below), whose sum is σ = 57600. Its totient is φ = 3456.

The previous prime is 15959. The next prime is 15971. The reversal of 15960 is 6951.

15960 = T₅₅ + T₅₆ + ... + T₆₃.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 15960.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831 + ... + 849.

It is an arithmetic number, because the mean of its divisors is an integer number (900).

2¹⁵⁹⁶⁰ is an apocalyptic number.

15960 is a gapful number since it is divisible by the number (10) 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 15960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28800).

15960 is an abundant number, since it is smaller than the sum of its proper divisors (41640).

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

15960 is a wasteful number, since it uses less digits than its factorization.

15960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 15960 is about 126.3328935788. The cubic root of 15960 is about 25.1774047905.

Subtracting from 15960 its reverse (6951), we obtain a palindrome (9009).

Multiplying 15960 by its reverse (6951), we get a triangular number (110937960 = T₁₄₈₉₅).

It can be divided in two parts, 15 and 960, that multiplied together give a square (14400 = 120²).

The spelling of 15960 in words is "fifteen thousand, nine hundred sixty".