228518229 has 8 divisors (see below), whose sum is σ = 304812160. Its totient is φ = 152284896.

The previous prime is 228518209. The next prime is 228518237. The reversal of 228518229 is 922815822.

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

It is not a de Polignac number, because 228518229 - 2¹² = 228514133 is a prime.

It is a super-3 number, since 3×228518229³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228518209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5464 + ... + 22065.

It is an arithmetic number, because the mean of its divisors is an integer number (38101520).

Almost surely, 2^228518229 is an apocalyptic number.

It is an amenable number.

228518229 is a deficient number, since it is larger than the sum of its proper divisors (76293931).

228518229 is a wasteful number, since it uses less digits than its factorization.

228518229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30299.

The product of its digits is 46080, while the sum is 39.

The square root of 228518229 is about 15116.8194075341. The cubic root of 228518229 is about 611.3739780556.

The spelling of 228518229 in words is "two hundred twenty-eight million, five hundred eighteen thousand, two hundred twenty-nine".