172238 has 8 divisors (see below), whose sum is σ = 281880. Its totient is φ = 78280.

The previous prime is 172223. The next prime is 172243. The reversal of 172238 is 832271.

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

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

172238 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 3 ways as a sum of consecutive naturals, for example, 3893 + ... + 3936.

It is an arithmetic number, because the mean of its divisors is an integer number (35235).

2¹⁷²²³⁸ is an apocalyptic number.

172238 is a deficient number, since it is larger than the sum of its proper divisors (109642).

172238 is a wasteful number, since it uses less digits than its factorization.

172238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7842.

The product of its digits is 672, while the sum is 23.

The square root of 172238 is about 415.0156623550. The cubic root of 172238 is about 55.6386167901.

The spelling of 172238 in words is "one hundred seventy-two thousand, two hundred thirty-eight".