12522272 has 24 divisors (see below), whose sum is σ = 28175616. Its totient is φ = 5366592.

The previous prime is 12522271. The next prime is 12522277. The reversal of 12522272 is 27222521.

It is not an unprimeable number, because it can be changed into a prime (12522271) 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 3 ways as a sum of consecutive naturals, for example, 27728 + ... + 28175.

It is an arithmetic number, because the mean of its divisors is an integer number (1173984).

Almost surely, 2^12522272 is an apocalyptic number.

It is an amenable number.

12522272 is an abundant number, since it is smaller than the sum of its proper divisors (15653344).

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

12522272 is an equidigital number, since it uses as much as digits as its factorization.

12522272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55920 (or 55912 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 12522272 is about 3538.6822406088. The cubic root of 12522272 is about 232.2171965197.

Adding to 12522272 its reverse (27222521), we get a palindrome (39744793).

The spelling of 12522272 in words is "twelve million, five hundred twenty-two thousand, two hundred seventy-two".