228144012 has 48 divisors (see below), whose sum is σ = 574312032. Its totient is φ = 70220800.

The previous prime is 228143989. The next prime is 228144013. The reversal of 228144012 is 210441822.

228144012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228144012² = 104099380422912288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228144013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262 + ... + 21362.

It is an arithmetic number, because the mean of its divisors is an integer number (11964834).

Almost surely, 2^228144012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228144012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287156016).

228144012 is an abundant number, since it is smaller than the sum of its proper divisors (346168020).

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

228144012 is a wasteful number, since it uses less digits than its factorization.

228144012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21178 (or 21176 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 228144012 is about 15104.4368316068. The cubic root of 228144012 is about 611.0400710173.

Adding to 228144012 its reverse (210441822), we get a palindrome (438585834).

The spelling of 228144012 in words is "two hundred twenty-eight million, one hundred forty-four thousand, twelve".