173228440 has 96 divisors (see below), whose sum is σ = 489716640. Its totient is φ = 53982720.

The previous prime is 173228431. The next prime is 173228441. The reversal of 173228440 is 44822371.

173228440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173228441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31324 + ... + 36436.

It is an arithmetic number, because the mean of its divisors is an integer number (5101215).

Almost surely, 2^173228440 is an apocalyptic number.

173228440 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 173228440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244858320).

173228440 is an abundant number, since it is smaller than the sum of its proper divisors (316488200).

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

173228440 is a wasteful number, since it uses less digits than its factorization.

173228440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153 (or 5138 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 173228440 is about 13161.6275589305. The cubic root of 173228440 is about 557.4506139767.

The spelling of 173228440 in words is "one hundred seventy-three million, two hundred twenty-eight thousand, four hundred forty".