228239412 has 24 divisors (see below), whose sum is σ = 542608416. Its totient is φ = 74644128.

The previous prime is 228239393. The next prime is 228239423. The reversal of 228239412 is 214932822.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 178798 + ... + 180069.

It is an arithmetic number, because the mean of its divisors is an integer number (22608684).

Almost surely, 2^228239412 is an apocalyptic number.

It is an amenable number.

228239412 is an abundant number, since it is smaller than the sum of its proper divisors (314369004).

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

228239412 is a wasteful number, since it uses less digits than its factorization.

228239412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358927 (or 358925 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 228239412 is about 15107.5945140184. The cubic root of 228239412 is about 611.1252293622.

The spelling of 228239412 in words is "two hundred twenty-eight million, two hundred thirty-nine thousand, four hundred twelve".