173401228 has 144 divisors (see below), whose sum is σ = 427098112. Its totient is φ = 59875200.

The previous prime is 173401211. The next prime is 173401229. The reversal of 173401228 is 822104371.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 173401196 and 173401205.

It is not an unprimeable number, because it can be changed into a prime (173401229) 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 47 ways as a sum of consecutive naturals, for example, 1365301 + ... + 1365427.

Almost surely, 2^173401228 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 173401228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213549056).

173401228 is an abundant number, since it is smaller than the sum of its proper divisors (253696884).

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

173401228 is a wasteful number, since it uses less digits than its factorization.

173401228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 173401228 is about 13168.1900047045. The cubic root of 173401228 is about 557.6358968112.

Adding to 173401228 its reverse (822104371), we get a palindrome (995505599).

The spelling of 173401228 in words is "one hundred seventy-three million, four hundred one thousand, two hundred twenty-eight".