215852 has 24 divisors (see below), whose sum is σ = 465696. Its totient is φ = 85248.

The previous prime is 215851. The next prime is 215857. The reversal of 215852 is 258512.

215852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (215851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68 + ... + 660.

It is an arithmetic number, because the mean of its divisors is an integer number (19404).

2²¹⁵⁸⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232848).

215852 is an abundant number, since it is smaller than the sum of its proper divisors (249844).

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

215852 is a wasteful number, since it uses less digits than its factorization.

215852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 615 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 215852 is about 464.5987516126. The cubic root of 215852 is about 59.9862931652.

The spelling of 215852 in words is "two hundred fifteen thousand, eight hundred fifty-two".