228685205 has 24 divisors (see below), whose sum is σ = 333113472. Its totient is φ = 149991072.

The previous prime is 228685199. The next prime is 228685229. The reversal of 228685205 is 502586822.

It is a happy number.

It is not a de Polignac number, because 228685205 - 2¹⁴ = 228668821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14657 + ... + 25926.

It is an arithmetic number, because the mean of its divisors is an integer number (13879728).

Almost surely, 2^228685205 is an apocalyptic number.

It is an amenable number.

228685205 is a deficient number, since it is larger than the sum of its proper divisors (104428267).

228685205 is a wasteful number, since it uses less digits than its factorization.

228685205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40625 (or 40618 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 228685205 is about 15122.3412539196. The cubic root of 228685205 is about 611.5228500993.

The spelling of 228685205 in words is "two hundred twenty-eight million, six hundred eighty-five thousand, two hundred five".