12223578 has 16 divisors (see below), whose sum is σ = 25885440. Its totient is φ = 3834816.

The previous prime is 12223577. The next prime is 12223597. The reversal of 12223578 is 87532221.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12223571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 59818 + ... + 60021.

It is an arithmetic number, because the mean of its divisors is an integer number (1617840).

Almost surely, 2^12223578 is an apocalyptic number.

12223578 is an abundant number, since it is smaller than the sum of its proper divisors (13661862).

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

12223578 is a wasteful number, since it uses less digits than its factorization.

12223578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119861.

The product of its digits is 6720, while the sum is 30.

The square root of 12223578 is about 3496.2233910321. The cubic root of 12223578 is about 230.3559579566.

Adding to 12223578 its reverse (87532221), we get a palindrome (99755799).

The spelling of 12223578 in words is "twelve million, two hundred twenty-three thousand, five hundred seventy-eight".