173217980 has 48 divisors (see below), whose sum is σ = 394105824. Its totient is φ = 63571200.

The previous prime is 173217973. The next prime is 173217997. The reversal of 173217980 is 89712371.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 43055 + ... + 46905.

It is an arithmetic number, because the mean of its divisors is an integer number (8210538).

Almost surely, 2^173217980 is an apocalyptic number.

173217980 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 173217980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197052912).

173217980 is an abundant number, since it is smaller than the sum of its proper divisors (220887844).

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

173217980 is a wasteful number, since it uses less digits than its factorization.

173217980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046 (or 4044 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 173217980 is about 13161.2301856627. The cubic root of 173217980 is about 557.4393936275.

The spelling of 173217980 in words is "one hundred seventy-three million, two hundred seventeen thousand, nine hundred eighty".