170438 has 8 divisors (see below), whose sum is σ = 264000. Its totient is φ = 82440.

The previous prime is 170413. The next prime is 170441. The reversal of 170438 is 834071.

It is a happy number.

170438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×170438² = 58098223688, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

170438 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, 1313 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (33000).

2¹⁷⁰⁴³⁸ is an apocalyptic number.

170438 is a deficient number, since it is larger than the sum of its proper divisors (93562).

170438 is a wasteful number, since it uses less digits than its factorization.

170438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782.

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

The square root of 170438 is about 412.8413738956. The cubic root of 170438 is about 55.4441176552. Note that the first 3 decimals are identical.

The spelling of 170438 in words is "one hundred seventy thousand, four hundred thirty-eight".