238226217 has 8 divisors (see below), whose sum is σ = 319060224. Its totient is φ = 158104848.

The previous prime is 238226201. The next prime is 238226231. The reversal of 238226217 is 712622832.

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

It is not a de Polignac number, because 238226217 - 2⁴ = 238226201 is a prime.

It is a super-2 number, since 2×238226217² = 113503460932262178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238226717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177378 + ... + 178715.

It is an arithmetic number, because the mean of its divisors is an integer number (39882528).

Almost surely, 2^238226217 is an apocalyptic number.

It is an amenable number.

238226217 is a deficient number, since it is larger than the sum of its proper divisors (80834007).

238226217 is a wasteful number, since it uses less digits than its factorization.

238226217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356319.

The product of its digits is 16128, while the sum is 33.

The square root of 238226217 is about 15434.5786142674. The cubic root of 238226217 is about 619.9117260727.

The spelling of 238226217 in words is "two hundred thirty-eight million, two hundred twenty-six thousand, two hundred seventeen".