180228171 has 4 divisors (see below), whose sum is σ = 240304232. Its totient is φ = 120152112.

The previous prime is 180228163. The next prime is 180228187. The reversal of 180228171 is 171822081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171822081 = 3 ⋅57274027.

It is not a de Polignac number, because 180228171 - 2³ = 180228163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180228071) 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 3 ways as a sum of consecutive naturals, for example, 30038026 + ... + 30038031.

It is an arithmetic number, because the mean of its divisors is an integer number (60076058).

Almost surely, 2^180228171 is an apocalyptic number.

180228171 is a deficient number, since it is larger than the sum of its proper divisors (60076061).

180228171 is an equidigital number, since it uses as much as digits as its factorization.

180228171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60076060.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 180228171 is about 13424.9086030408. The cubic root of 180228171 is about 564.8600911833.

The spelling of 180228171 in words is "one hundred eighty million, two hundred twenty-eight thousand, one hundred seventy-one".