171998352 has 60 divisors (see below), whose sum is σ = 488165184. Its totient is φ = 56521920.

The previous prime is 171998297. The next prime is 171998369. The reversal of 171998352 is 253899171.

It is a junction number, because it is equal to n+sod(n) for n = 171998298 and 171998307.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1813 + ... + 18635.

Almost surely, 2^171998352 is an apocalyptic number.

171998352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171998352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244082592).

171998352 is an abundant number, since it is smaller than the sum of its proper divisors (316166832).

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

171998352 is a wasteful number, since it uses less digits than its factorization.

171998352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16908 (or 16899 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 171998352 is about 13114.8142190425. The cubic root of 171998352 is about 556.1280004800.

The spelling of 171998352 in words is "one hundred seventy-one million, nine hundred ninety-eight thousand, three hundred fifty-two".