171320136 has 64 divisors (see below), whose sum is σ = 476152320. Its totient is φ = 51010560.

The previous prime is 171320063. The next prime is 171320137. The reversal of 171320136 is 631023171.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (171320137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816 + ... + 18528.

It is an arithmetic number, because the mean of its divisors is an integer number (7439880).

Almost surely, 2^171320136 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 171320136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238076160).

171320136 is an abundant number, since it is smaller than the sum of its proper divisors (304832184).

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

171320136 is a wasteful number, since it uses less digits than its factorization.

171320136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17766 (or 17762 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 171320136 is about 13088.9318127951. The cubic root of 171320136 is about 555.3960714714.

The spelling of 171320136 in words is "one hundred seventy-one million, three hundred twenty thousand, one hundred thirty-six".