12227760 has 240 divisors, whose sum is σ = 46309536. Its totient is φ = 2985984.

The previous prime is 12227753. The next prime is 12227779. The reversal of 12227760 is 6772221.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×12227760² = 299036229235200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 330462 + ... + 330498.

Almost surely, 2^12227760 is an apocalyptic number.

12227760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12227760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23154768).

12227760 is an abundant number, since it is smaller than the sum of its proper divisors (34081776).

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

12227760 is a wasteful number, since it uses less digits than its factorization.

12227760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 12227760 is about 3496.8214137985. The cubic root of 12227760 is about 230.3822251913.

Adding to 12227760 its reverse (6772221), we get a palindrome (18999981).

The spelling of 12227760 in words is "twelve million, two hundred twenty-seven thousand, seven hundred sixty".