215892 has 24 divisors (see below), whose sum is σ = 560000. Its totient is φ = 71928.

The previous prime is 215863. The next prime is 215893. The reversal of 215892 is 298512.

215892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 215892.

It is not an unprimeable number, because it can be changed into a prime (215893) by changing a digit.

215892 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892 + ... + 1107.

2²¹⁵⁸⁹² is an apocalyptic number.

It is an amenable number.

215892 is an abundant number, since it is smaller than the sum of its proper divisors (344108).

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

215892 is a wasteful number, since it uses less digits than its factorization.

215892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 2004 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 215892 is about 464.6417975172. The cubic root of 215892 is about 59.9899983329.

The spelling of 215892 in words is "two hundred fifteen thousand, eight hundred ninety-two".