12227904 has 168 divisors, whose sum is σ = 39940992. Its totient is φ = 3548160.

The previous prime is 12227903. The next prime is 12227909. The reversal of 12227904 is 40972221.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12227903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172189 + ... + 172259.

It is an arithmetic number, because the mean of its divisors is an integer number (237744).

Almost surely, 2^12227904 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 12227904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19970496).

12227904 is an abundant number, since it is smaller than the sum of its proper divisors (27713088).

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

12227904 is a wasteful number, since it uses less digits than its factorization.

12227904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12227904 is about 3496.8420038658. The cubic root of 12227904 is about 230.3831295518.

It can be divided in two parts, 12227 and 904, that added together give a palindrome (13131).

The spelling of 12227904 in words is "twelve million, two hundred twenty-seven thousand, nine hundred four".