12144656 has 20 divisors (see below), whose sum is σ = 23655852. Its totient is φ = 6039936.

The previous prime is 12144637. The next prime is 12144677. The reversal of 12144656 is 65644121.

12144656 = T₂₄₈ + T₂₄₉ + ... + T₄₄₄.

It can be written as a sum of positive squares in 2 ways, for example, as 11971600 + 173056 = 3460^2 + 416^2 .

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, 1226 + ... + 5078.

Almost surely, 2^12144656 is an apocalyptic number.

12144656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12144656 is a deficient number, since it is larger than the sum of its proper divisors (11511196).

12144656 is a wasteful number, since it uses less digits than its factorization.

12144656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058 (or 4052 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 12144656 is about 3484.9183634628. The cubic root of 12144656 is about 229.8591197744.

Adding to 12144656 its reverse (65644121), we get a palindrome (77788777).

The spelling of 12144656 in words is "twelve million, one hundred forty-four thousand, six hundred fifty-six".