173222916 has 48 divisors (see below), whose sum is σ = 431639040. Its totient is φ = 53948160.

The previous prime is 173222897. The next prime is 173222923. The reversal of 173222916 is 619222371.

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, 2760 + ... + 18816.

It is an arithmetic number, because the mean of its divisors is an integer number (8992480).

Almost surely, 2^173222916 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 173222916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215819520).

173222916 is an abundant number, since it is smaller than the sum of its proper divisors (258416124).

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

173222916 is a wasteful number, since it uses less digits than its factorization.

173222916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16124 (or 16122 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 173222916 is about 13161.4177047915. The cubic root of 173222916 is about 557.4446884872. Note that the first 3 decimals are identical.

The spelling of 173222916 in words is "one hundred seventy-three million, two hundred twenty-two thousand, nine hundred sixteen".