171113238 has 48 divisors (see below), whose sum is σ = 390944736. Its totient is φ = 53982720.

The previous prime is 171113219. The next prime is 171113287. The reversal of 171113238 is 832311171.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38028 + ... + 42288.

It is an arithmetic number, because the mean of its divisors is an integer number (8144682).

Almost surely, 2^171113238 is an apocalyptic number.

171113238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 171113238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195472368).

171113238 is an abundant number, since it is smaller than the sum of its proper divisors (219831498).

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

171113238 is a wasteful number, since it uses less digits than its factorization.

171113238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389 (or 4386 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 171113238 is about 13081.0258772009. The cubic root of 171113238 is about 555.1724032208.

The spelling of 171113238 in words is "one hundred seventy-one million, one hundred thirteen thousand, two hundred thirty-eight".