228439912 has 16 divisors (see below), whose sum is σ = 428652000. Its totient is φ = 114132720.

The previous prime is 228439903. The next prime is 228439943. The reversal of 228439912 is 219934822.

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 3 ways as a sum of consecutive naturals, for example, 987 + ... + 21397.

It is an arithmetic number, because the mean of its divisors is an integer number (26790750).

Almost surely, 2^228439912 is an apocalyptic number.

It is an amenable number.

228439912 is a deficient number, since it is larger than the sum of its proper divisors (200212088).

228439912 is a wasteful number, since it uses less digits than its factorization.

228439912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21816 (or 21812 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 228439912 is about 15114.2287927635. The cubic root of 228439912 is about 611.3041273965.

The spelling of 228439912 in words is "two hundred twenty-eight million, four hundred thirty-nine thousand, nine hundred twelve".