171228224 has 14 divisors (see below), whose sum is σ = 339781134. Its totient is φ = 85614080.

The previous prime is 171228223. The next prime is 171228227. The reversal of 171228224 is 422822171.

It can be written as a sum of positive squares in only one way, i.e., 160782400 + 10445824 = 12680^2 + 3232^2 .

It is not an unprimeable number, because it can be changed into a prime (171228223) 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 as a sum of consecutive naturals, namely, 1337657 + ... + 1337784.

It is an arithmetic number, because the mean of its divisors is an integer number (24270081).

Almost surely, 2^171228224 is an apocalyptic number.

It is an amenable number.

171228224 is a deficient number, since it is larger than the sum of its proper divisors (168552910).

171228224 is an equidigital number, since it uses as much as digits as its factorization.

171228224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675453 (or 2675443 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 171228224 is about 13085.4202836592. The cubic root of 171228224 is about 555.2967317275.

The spelling of 171228224 in words is "one hundred seventy-one million, two hundred twenty-eight thousand, two hundred twenty-four".