228165158 has 8 divisors (see below), whose sum is σ = 368574528. Its totient is φ = 105306984.

The previous prime is 228165151. The next prime is 228165169. The reversal of 228165158 is 851561822.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228165151) 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, 4387766 + ... + 4387817.

It is an arithmetic number, because the mean of its divisors is an integer number (46071816).

Almost surely, 2^228165158 is an apocalyptic number.

228165158 is a deficient number, since it is larger than the sum of its proper divisors (140409370).

228165158 is a wasteful number, since it uses less digits than its factorization.

228165158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775598.

The product of its digits is 38400, while the sum is 38.

The square root of 228165158 is about 15105.1368083841. The cubic root of 228165158 is about 611.0589489386.

The spelling of 228165158 in words is "two hundred twenty-eight million, one hundred sixty-five thousand, one hundred fifty-eight".