228508159 has 4 divisors (see below), whose sum is σ = 249281640. Its totient is φ = 207734680.

The previous prime is 228508153. The next prime is 228508207. The reversal of 228508159 is 951805822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228508159 - 2¹¹ = 228506111 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228508153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10386724 + ... + 10386745.

It is an arithmetic number, because the mean of its divisors is an integer number (62320410).

Almost surely, 2^228508159 is an apocalyptic number.

228508159 is a deficient number, since it is larger than the sum of its proper divisors (20773481).

228508159 is a wasteful number, since it uses less digits than its factorization.

228508159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20773480.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 228508159 is about 15116.4863311551. The cubic root of 228508159 is about 611.3649975519.

The spelling of 228508159 in words is "two hundred twenty-eight million, five hundred eight thousand, one hundred fifty-nine".