171725428028 has 36 divisors (see below), whose sum is σ = 381364267032. Its totient is φ = 66906010080.

The previous prime is 171725428027. The next prime is 171725428031. The reversal of 171725428028 is 820824527171.

171725428028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171725428027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39822851 + ... + 39827162.

It is an arithmetic number, because the mean of its divisors is an integer number (10593451862).

Almost surely, 2^171725428028 is an apocalyptic number.

It is an amenable number.

171725428028 is an abundant number, since it is smaller than the sum of its proper divisors (209638839004).

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

171725428028 is a wasteful number, since it uses less digits than its factorization.

171725428028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79650042 (or 79650033 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 47.

The spelling of 171725428028 in words is "one hundred seventy-one billion, seven hundred twenty-five million, four hundred twenty-eight thousand, twenty-eight".