12228560 has 20 divisors (see below), whose sum is σ = 28431588. Its totient is φ = 4891392.

The previous prime is 12228553. The next prime is 12228563. The reversal of 12228560 is 6582221.

It can be written as a sum of positive squares in 2 ways, for example, as 7011904 + 5216656 = 2648^2 + 2284^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76349 + ... + 76508.

Almost surely, 2^12228560 is an apocalyptic number.

12228560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12228560 is an abundant number, since it is smaller than the sum of its proper divisors (16203028).

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

12228560 is a wasteful number, since it uses less digits than its factorization.

12228560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152870 (or 152864 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 12228560 is about 3496.9358015268. The cubic root of 12228560 is about 230.3872493265.

It can be divided in two parts, 122 and 28560, that added together give a palindrome (28682).

The spelling of 12228560 in words is "twelve million, two hundred twenty-eight thousand, five hundred sixty".