228605812 has 12 divisors (see below), whose sum is σ = 401271136. Its totient is φ = 113956920.

The previous prime is 228605807. The next prime is 228605813. The reversal of 228605812 is 218506822.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228605813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85008 + ... + 87655.

Almost surely, 2^228605812 is an apocalyptic number.

It is an amenable number.

228605812 is a deficient number, since it is larger than the sum of its proper divisors (172665324).

228605812 is a wasteful number, since it uses less digits than its factorization.

228605812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172998 (or 172996 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 228605812 is about 15119.7160026239. The cubic root of 228605812 is about 611.4520741270.

The spelling of 228605812 in words is "two hundred twenty-eight million, six hundred five thousand, eight hundred twelve".