171872712 has 64 divisors (see below), whose sum is σ = 520833600. Its totient is φ = 52081920.

The previous prime is 171872681. The next prime is 171872717. The reversal of 171872712 is 217278171.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171872717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33793 + ... + 38544.

It is an arithmetic number, because the mean of its divisors is an integer number (8138025).

Almost surely, 2^171872712 is an apocalyptic number.

171872712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

171872712 is an abundant number, since it is smaller than the sum of its proper divisors (348960888).

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

171872712 is a wasteful number, since it uses less digits than its factorization.

171872712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72363 (or 72353 counting only the distinct ones).

The product of its digits is 10976, while the sum is 36.

The square root of 171872712 is about 13110.0233409403. The cubic root of 171872712 is about 555.9925554961.

The spelling of 171872712 in words is "one hundred seventy-one million, eight hundred seventy-two thousand, seven hundred twelve".