228145166 has 8 divisors (see below), whose sum is σ = 344130120. Its totient is φ = 113435128.

The previous prime is 228145123. The next prime is 228145187. The reversal of 228145166 is 661541822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 318281 + ... + 318996.

It is an arithmetic number, because the mean of its divisors is an integer number (43016265).

Almost surely, 2^228145166 is an apocalyptic number.

228145166 is a deficient number, since it is larger than the sum of its proper divisors (115984954).

228145166 is a wasteful number, since it uses less digits than its factorization.

228145166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637458.

The product of its digits is 23040, while the sum is 35.

The square root of 228145166 is about 15104.4750322545. The cubic root of 228145166 is about 611.0411012716.

Adding to 228145166 its reverse (661541822), we get a palindrome (889686988).

The spelling of 228145166 in words is "two hundred twenty-eight million, one hundred forty-five thousand, one hundred sixty-six".