12228930 has 144 divisors (see below), whose sum is σ = 38413440. Its totient is φ = 2689344.

The previous prime is 12228929. The next prime is 12228991. The reversal of 12228930 is 3982221.

It is a happy number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 12228894 and 12228903.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 207241 + ... + 207299.

It is an arithmetic number, because the mean of its divisors is an integer number (266760).

Almost surely, 2^12228930 is an apocalyptic number.

12228930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12228930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19206720).

12228930 is an abundant number, since it is smaller than the sum of its proper divisors (26184510).

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

12228930 is a wasteful number, since it uses less digits than its factorization.

12228930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12228930 is about 3496.9887045857. The cubic root of 12228930 is about 230.3895729150.

The spelling of 12228930 in words is "twelve million, two hundred twenty-eight thousand, nine hundred thirty".