173145472 has 64 divisors (see below), whose sum is σ = 364066560. Its totient is φ = 81861120.

The previous prime is 173145463. The next prime is 173145473. The reversal of 173145472 is 274541371.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173145473) 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 7 ways as a sum of consecutive naturals, for example, 302947 + ... + 303517.

It is an arithmetic number, because the mean of its divisors is an integer number (5688540).

Almost surely, 2^173145472 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 173145472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182033280).

173145472 is an abundant number, since it is smaller than the sum of its proper divisors (190921088).

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

173145472 is a wasteful number, since it uses less digits than its factorization.

173145472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 699 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 173145472 is about 13158.4752916134. The cubic root of 173145472 is about 557.3616025180.

The spelling of 173145472 in words is "one hundred seventy-three million, one hundred forty-five thousand, four hundred seventy-two".