228319985 has 8 divisors (see below), whose sum is σ = 274605120. Its totient is φ = 182241904.

The previous prime is 228319943. The next prime is 228320023. The reversal of 228319985 is 589913822.

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

It is a cyclic number.

It is not a de Polignac number, because 228319985 - 2⁶ = 228319921 is a prime.

It is an unprimeable number.

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, 49325 + ... + 53754.

It is an arithmetic number, because the mean of its divisors is an integer number (34325640).

Almost surely, 2^228319985 is an apocalyptic number.

It is an amenable number.

228319985 is a deficient number, since it is larger than the sum of its proper divisors (46285135).

228319985 is a wasteful number, since it uses less digits than its factorization.

228319985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103527.

The product of its digits is 311040, while the sum is 47.

The square root of 228319985 is about 15110.2609176678. The cubic root of 228319985 is about 611.1971339755.

The spelling of 228319985 in words is "two hundred twenty-eight million, three hundred nineteen thousand, nine hundred eighty-five".