228343212 has 42 divisors (see below), whose sum is σ = 599134508. Its totient is φ = 76113432.

The previous prime is 228343207. The next prime is 228343217. The reversal of 228343212 is 212343822.

228343212 is a `hidden beast` number, since 228 + 3 + 432 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (228343207) and next prime (228343217).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (228343217) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 36238 + ... + 42069.

Almost surely, 2^228343212 is an apocalyptic number.

It is an amenable number.

228343212 is an abundant number, since it is smaller than the sum of its proper divisors (370791296).

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

228343212 is an equidigital number, since it uses as much as digits as its factorization.

228343212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78329 (or 78312 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 228343212 is about 15111.0294818057. The cubic root of 228343212 is about 611.2178589747.

The spelling of 228343212 in words is "two hundred twenty-eight million, three hundred forty-three thousand, two hundred twelve".