173684940 has 192 divisors, whose sum is σ = 590671872. Its totient is φ = 37555200.

The previous prime is 173684879. The next prime is 173684941. The reversal of 173684940 is 49486371.

173684940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 173684892 and 173684901.

It is not an unprimeable number, because it can be changed into a prime (173684941) 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 63 ways as a sum of consecutive naturals, for example, 265654 + ... + 266306.

It is an arithmetic number, because the mean of its divisors is an integer number (3076416).

Almost surely, 2^173684940 is an apocalyptic number.

173684940 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 173684940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295335936).

173684940 is an abundant number, since it is smaller than the sum of its proper divisors (416986932).

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

173684940 is a wasteful number, since it uses less digits than its factorization.

173684940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 173684940 is about 13178.9582289345. The cubic root of 173684940 is about 557.9398581138.

The spelling of 173684940 in words is "one hundred seventy-three million, six hundred eighty-four thousand, nine hundred forty".