216348 has 36 divisors (see below), whose sum is σ = 558600. Its totient is φ = 65120.

The previous prime is 216347. The next prime is 216371. The reversal of 216348 is 843612.

It is a happy number.

216348 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 a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216348.

It is not an unprimeable number, because it can be changed into a prime (216347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1378 + ... + 1526.

2²¹⁶³⁴⁸ 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 216348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279300).

216348 is an abundant number, since it is smaller than the sum of its proper divisors (342252).

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

216348 is a wasteful number, since it uses less digits than its factorization.

216348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 165 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 216348 is about 465.1322392611. The cubic root of 216348 is about 60.0322049332.

Subtracting 216348 from its reverse (843612), we obtain a square (627264 = 792²).

It can be divided in two parts, 2163 and 48, that added together give a triangular number (2211 = T₆₆).

The spelling of 216348 in words is "two hundred sixteen thousand, three hundred forty-eight".