12478276 has 6 divisors (see below), whose sum is σ = 21836990. Its totient is φ = 6239136.

The previous prime is 12478273. The next prime is 12478283. The reversal of 12478276 is 67287421.

It can be written as a sum of positive squares in only one way, i.e., 12068676 + 409600 = 3474^2 + 640^2 .

It is not an unprimeable number, because it can be changed into a prime (12478273) 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 as a sum of consecutive naturals, namely, 1559781 + ... + 1559788.

Almost surely, 2^12478276 is an apocalyptic number.

It is an amenable number.

12478276 is a deficient number, since it is larger than the sum of its proper divisors (9358714).

12478276 is a wasteful number, since it uses less digits than its factorization.

12478276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119573 (or 3119571 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 12478276 is about 3532.4603324029. The cubic root of 12478276 is about 231.9449185526.

It can be divided in two parts, 124 and 78276, that added together give a square (78400 = 280²).

The spelling of 12478276 in words is "twelve million, four hundred seventy-eight thousand, two hundred seventy-six".