216238 has 8 divisors (see below), whose sum is σ = 353880. Its totient is φ = 98280.

The previous prime is 216233. The next prime is 216259. The reversal of 216238 is 832612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×216238³ = 30333135308379816, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 9829 = 216238 / (2 + 1 + 6 + 2 + 3 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216233) 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, 4893 + ... + 4936.

It is an arithmetic number, because the mean of its divisors is an integer number (44235).

2²¹⁶²³⁸ is an apocalyptic number.

216238 is a deficient number, since it is larger than the sum of its proper divisors (137642).

216238 is a wasteful number, since it uses less digits than its factorization.

216238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9842.

The product of its digits is 576, while the sum is 22.

The square root of 216238 is about 465.0139782845. The cubic root of 216238 is about 60.0220289481.

It can be divided in two parts, 216 and 238, that added together give a palindrome (454).

The spelling of 216238 in words is "two hundred sixteen thousand, two hundred thirty-eight".