173230720 has 128 divisors (see below), whose sum is σ = 456503040. Its totient is φ = 62459904.

The previous prime is 173230709. The next prime is 173230721. The reversal of 173230720 is 27032371.

173230720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (173230721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390819 + ... + 391261.

It is an arithmetic number, because the mean of its divisors is an integer number (3566430).

Almost surely, 2^173230720 is an apocalyptic number.

173230720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173230720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228251520).

173230720 is an abundant number, since it is smaller than the sum of its proper divisors (283272320).

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

173230720 is a wasteful number, since it uses less digits than its factorization.

173230720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 173230720 is about 13161.7141740732. The cubic root of 173230720 is about 557.4530596526.

The spelling of 173230720 in words is "one hundred seventy-three million, two hundred thirty thousand, seven hundred twenty".