228012 has 12 divisors (see below), whose sum is σ = 532056. Its totient is φ = 76000.

The previous prime is 227993. The next prime is 228013. The reversal of 228012 is 210822.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 227982 and 228000.

It is not an unprimeable number, because it can be changed into a prime (228013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9489 + ... + 9512.

It is an arithmetic number, because the mean of its divisors is an integer number (44338).

2²²⁸⁰¹² is an apocalyptic number.

It is an amenable number.

228012 is an abundant number, since it is smaller than the sum of its proper divisors (304044).

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

228012 is a wasteful number, since it uses less digits than its factorization.

228012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19008 (or 19006 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 228012 is about 477.5060209044. The cubic root of 228012 is about 61.0922191986.

Adding to 228012 its reverse (210822), we get a palindrome (438834).

The spelling of 228012 in words is "two hundred twenty-eight thousand, twelve".