215960 has 16 divisors (see below), whose sum is σ = 486000. Its totient is φ = 86368.

The previous prime is 215959. The next prime is 215981. The reversal of 215960 is 69512.

215960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2660 + ... + 2739.

It is an arithmetic number, because the mean of its divisors is an integer number (30375).

2²¹⁵⁹⁶⁰ is an apocalyptic number.

215960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215960 is an abundant number, since it is smaller than the sum of its proper divisors (270040).

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

215960 is a wasteful number, since it uses less digits than its factorization.

215960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410 (or 5406 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 215960 is about 464.7149664041. The cubic root of 215960 is about 59.9962960676.

The spelling of 215960 in words is "two hundred fifteen thousand, nine hundred sixty".