171117396 has 72 divisors (see below), whose sum is σ = 450987264. Its totient is φ = 54645120.

The previous prime is 171117389. The next prime is 171117403. The reversal of 171117396 is 693711171.

It is an interprime number because it is at equal distance from previous prime (171117389) and next prime (171117403).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 171117396.

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, 118696 + ... + 120128.

It is an arithmetic number, because the mean of its divisors is an integer number (6263712).

Almost surely, 2^171117396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171117396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225493632).

171117396 is an abundant number, since it is smaller than the sum of its proper divisors (279869868).

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

171117396 is a wasteful number, since it uses less digits than its factorization.

171117396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581 (or 1576 counting only the distinct ones).

The product of its digits is 7938, while the sum is 36.

The square root of 171117396 is about 13081.1848087243. The cubic root of 171117396 is about 555.1769000250.

The spelling of 171117396 in words is "one hundred seventy-one million, one hundred seventeen thousand, three hundred ninety-six".