216392 has 16 divisors (see below), whose sum is σ = 442800. Its totient is φ = 98320.

The previous prime is 216379. The next prime is 216397. The reversal of 216392 is 293612.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216392.

It is not an unprimeable number, because it can be changed into a prime (216397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142 + ... + 1317.

It is an arithmetic number, because the mean of its divisors is an integer number (27675).

2²¹⁶³⁹² is an apocalyptic number.

216392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216392 is an abundant number, since it is smaller than the sum of its proper divisors (226408).

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

216392 is a wasteful number, since it uses less digits than its factorization.

216392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476 (or 2472 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 216392 is about 465.1795352334. The cubic root of 216392 is about 60.0362743614.

The spelling of 216392 in words is "two hundred sixteen thousand, three hundred ninety-two".