12288641 has 4 divisors (see below), whose sum is σ = 12297300. Its totient is φ = 12279984.

The previous prime is 12288631. The next prime is 12288659. The reversal of 12288641 is 14688221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14688221 = 17 ⋅864013.

It can be written as a sum of positive squares in 2 ways, for example, as 5424241 + 6864400 = 2329^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 12288641 - 2¹⁴ = 12272257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12288598 and 12288607.

It is not an unprimeable number, because it can be changed into a prime (12288631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (3074325).

Almost surely, 2^12288641 is an apocalyptic number.

It is an amenable number.

12288641 is a deficient number, since it is larger than the sum of its proper divisors (8659).

12288641 is an equidigital number, since it uses as much as digits as its factorization.

12288641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8658.

The product of its digits is 6144, while the sum is 32.

The square root of 12288641 is about 3505.5157965697. The cubic root of 12288641 is about 230.7639436880.

The spelling of 12288641 in words is "twelve million, two hundred eighty-eight thousand, six hundred forty-one".