12288442 has 8 divisors (see below), whose sum is σ = 18602100. Its totient is φ = 6087744.

The previous prime is 12288439. The next prime is 12288443. The reversal of 12288442 is 24488221.

It can be written as a sum of positive squares in 2 ways, for example, as 11964681 + 323761 = 3459^2 + 569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12288443) 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, 27967 + ... + 28402.

Almost surely, 2^12288442 is an apocalyptic number.

12288442 is a deficient number, since it is larger than the sum of its proper divisors (6313658).

12288442 is a wasteful number, since it uses less digits than its factorization.

12288442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56480.

The product of its digits is 8192, while the sum is 31.

The square root of 12288442 is about 3505.4874126147. The cubic root of 12288442 is about 230.7626980316.

The spelling of 12288442 in words is "twelve million, two hundred eighty-eight thousand, four hundred forty-two".