12288642 has 8 divisors (see below), whose sum is σ = 24577296. Its totient is φ = 4096212.

The previous prime is 12288631. The next prime is 12288659. The reversal of 12288642 is 24688221.

It is a happy number.

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

12288642 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024048 + ... + 1024059.

It is an arithmetic number, because the mean of its divisors is an integer number (3072162).

Almost surely, 2^12288642 is an apocalyptic number.

12288642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12288642 is a wasteful number, since it uses less digits than its factorization.

12288642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048112.

The product of its digits is 12288, while the sum is 33.

The square root of 12288642 is about 3505.5159392021. The cubic root of 12288642 is about 230.7639499475.

It can be divided in two parts, 1228 and 8642, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 12288642 in words is "twelve million, two hundred eighty-eight thousand, six hundred forty-two".