173061728 has 144 divisors (see below), whose sum is σ = 431207280. Its totient is φ = 67931136.

The previous prime is 173061727. The next prime is 173061731. The reversal of 173061728 is 827160371.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173061727) 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 23 ways as a sum of consecutive naturals, for example, 1102226 + ... + 1102382.

It is an arithmetic number, because the mean of its divisors is an integer number (2994495).

Almost surely, 2^173061728 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 173061728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215603640).

173061728 is an abundant number, since it is smaller than the sum of its proper divisors (258145552).

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

173061728 is a wasteful number, since it uses less digits than its factorization.

173061728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 173061728 is about 13155.2927751533. The cubic root of 173061728 is about 557.2717296948.

The spelling of 173061728 in words is "one hundred seventy-three million, sixty-one thousand, seven hundred twenty-eight".