228646212 has 12 divisors (see below), whose sum is σ = 533507856. Its totient is φ = 76215400.

The previous prime is 228646207. The next prime is 228646241. The reversal of 228646212 is 212646822.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9526914 + ... + 9526937.

It is an arithmetic number, because the mean of its divisors is an integer number (44458988).

Almost surely, 2^228646212 is an apocalyptic number.

It is an amenable number.

228646212 is an abundant number, since it is smaller than the sum of its proper divisors (304861644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228646212 is a wasteful number, since it uses less digits than its factorization.

228646212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19053858 (or 19053856 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 228646212 is about 15121.0519475333. The cubic root of 228646212 is about 611.4880913052.

The spelling of 228646212 in words is "two hundred twenty-eight million, six hundred forty-six thousand, two hundred twelve".