173289072 has 80 divisors (see below), whose sum is σ = 493004160. Its totient is φ = 52012800.

The previous prime is 173289059. The next prime is 173289089. The reversal of 173289072 is 270982371.

It is a self number, because there is not a number n which added to its sum of digits gives 173289072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56047 + ... + 59057.

It is an arithmetic number, because the mean of its divisors is an integer number (6162552).

Almost surely, 2^173289072 is an apocalyptic number.

173289072 is a gapful number since it is divisible by the number (12) 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 173289072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246502080).

173289072 is an abundant number, since it is smaller than the sum of its proper divisors (319715088).

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

173289072 is a wasteful number, since it uses less digits than its factorization.

173289072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 173289072 is about 13163.9307199635. The cubic root of 173289072 is about 557.5156444898.

The spelling of 173289072 in words is "one hundred seventy-three million, two hundred eighty-nine thousand, seventy-two".