12547422 has 12 divisors (see below), whose sum is σ = 27186120. Its totient is φ = 4182468.

The previous prime is 12547421. The next prime is 12547427. The reversal of 12547422 is 22474521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12547421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 348522 + ... + 348557.

It is an arithmetic number, because the mean of its divisors is an integer number (2265510).

Almost surely, 2^12547422 is an apocalyptic number.

12547422 is an abundant number, since it is smaller than the sum of its proper divisors (14638698).

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

12547422 is a wasteful number, since it uses less digits than its factorization.

12547422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697087 (or 697084 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 12547422 is about 3542.2340408279. The cubic root of 12547422 is about 232.3725558918.

The spelling of 12547422 in words is "twelve million, five hundred forty-seven thousand, four hundred twenty-two".