12729284 has 6 divisors (see below), whose sum is σ = 22276254. Its totient is φ = 6364640.

The previous prime is 12729271. The next prime is 12729293. The reversal of 12729284 is 48292721.

It can be written as a sum of positive squares in only one way, i.e., 10562500 + 2166784 = 3250^2 + 1472^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1591157 + ... + 1591164.

It is an arithmetic number, because the mean of its divisors is an integer number (3712709).

Almost surely, 2^12729284 is an apocalyptic number.

It is an amenable number.

12729284 is a deficient number, since it is larger than the sum of its proper divisors (9546970).

12729284 is a wasteful number, since it uses less digits than its factorization.

12729284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182325 (or 3182323 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 12729284 is about 3567.8122147893. The cubic root of 12729284 is about 233.4898423899.

The spelling of 12729284 in words is "twelve million, seven hundred twenty-nine thousand, two hundred eighty-four".